This book examines the birth of the scientific understanding of motion. It investigates which logical tools and methodological principles had to be in place to give a consistent account of motion, and which mathematical notions were introduced to gain control over conceptual problems of motion. It shows how the idea of motion raised two fundamental problems in the 5th and 4th century BCE: bringing together being and non-being, and bringing together time and space. The first problem (...) leads to the exclusion of motion from the realm of rational investigation in Parmenides, the second to Zeno's paradoxes of motion. Methodological and logical developments reacting to these puzzles are shown to be present implicitly in the atomists, and explicitly in Plato who also employs mathematical structures to make motion intelligible. With Aristotle we finally see the first outline of the fundamental framework with which we conceptualise motion today. (shrink)

Konstantin Pollok - Kant's Critical Concepts of Motion - Journal of the History of Philosophy 44:4 Journal of the History of Philosophy 44.4 559-575 Muse Search Journals This Journal Contents Kant's Critical Concepts of Motion Konstantin Pollok There are two significant places in Kant's Critical corpus where he discusses the concept of motion. The first is in the Critique of Pure Reason, where in the "Deduction of the Categories" Kant writes: Motion, as an act of (...) the subject , and therefore the synthesis of the manifold in space, first produces the concept of succession—if we abstract from this manifold and attend solely to the act through which we determine the inner sense according to its form. In this passage Kant simply refers to the concept of motion, and the immediate context in which this reference occurs reveals little about what he means by it. In the Metaphysical Foundations of Natural Science, however, motion plays a more significant role, and, concomitantly, it is in his writings on natural science that Kant most fully expresses his thoughts on the subject. For present purposes, the most relevant passage is paragraph 15 of the Preface of the Metaphysical Foundations, where Kant says that the concept of matter had … to be carried through all four of the indicated functions of the concepts of the understanding , where in each a new determination of this concept was added. The.. (shrink)

A large part of the difficulty of writing "conceptual history"—to borrow a term from Reviel Netz —is that once an illuminating new conceptual framework is articulated, it begins to seem self-evident and commonsensical to later thinkers. The historian's task of problematizing the obvious, and showing us the moves by which commonsense came to be created historically, is an arduous and challenging one, requiring resources of imagination, patience, and attention to detail. Sattler displays all those qualities in this dense and demanding (...) study, and a review needs to begin by acknowledging the sheer... (shrink)

The following paper investigates the concept of motion in Jacques Legrand, a hitherto little-studied author of the early fifteenth century. Legrand, an important member of the Order of Hermits of Saint Augustine, wrote a philosophical Compendium for the students of his Order. This contribution first attempts to provide a contextualization of Legrand’s treatment of motion within this work. Legrand’s contribution to philosophical encyclopedism is here discussed. Secondly, it reviews the most important theories on the nature of movement (...) in the Middle Ages. Thirdly, it offers a detailed analysis of Legrand’s arguments in support of the nominalist view that it is unnecessary (if not wrong) to consider the local motion as a fluxus added to the moveable body. The article suggests that Legrand’s generalized nominalist position may be connected with certain lines to be followed within his own Order or even with the anti-realist ideology of the conciliarists philosopher, like Pierre D’Ailly and Jean Gerson. (shrink)

The author argues that Newton’s distinction between absolute and relative motion, i.e. the refusal to define motion in relation to sensible things, in “Scholium on time, space, place and motion” from _Mathematical Principles of Natural Philosophy_, stems in great part from his critical stance towards Descartes’s philosophy of nature. This is apparent from the comparison of “Scholium”, in which Descartes is not mentioned at all, with Newton’s criticism of him in his manuscript _De gravitatione_. The positive results (...) of Newton’s encounter with Descartes’s theory of motion is almost completely identical to those of the “Scholium”: the definition of motion must concern the whole body and not just its surface; instead of “mutual translation”, it must include the force that is the cause of the physical motion; the motion of the bodies is uniform and straightforward, which can only be achieved within absolute space. As far as the theory of motion is concerned, Newton’s philosophical challenge was always Descartes. (shrink)

Leibniz’s and Whitehead’s analyses of motion are at the heart of their metaphysical schemes. These schemes are to be considered as two blueprints of a similar metaphysical intuition that emerged during two breakthrough eras, that is, the 17th century and the beginning of the 20th century, and retained the Aristotelian idea that existence requires an active principle. The two philosophers’ attempts to elucidate this idea in the context of their analyses of motion still interact with central, longstanding questions (...) in philosophy, in particular that concerning the ontological status of change. For both thinkers, the phenomenon of motion is an example par excellence, of the metaphysically fundamental principle of action that is required for change in the world. I focus on Leibniz’s and Whitehead’s similar understanding of the concept of transition that is inserted as an essential constitutive component of motion and ensures its status as something real.Keywords: Gottfried Leibniz; Alfred Whitehead; Motion; Change; Relativity; Transition. (shrink)

ArgumentAccording to Hermann von Helmholtz, free mobility of bodies seemed to be an essential condition of geometry. This free mobility can be interpreted either as matter of fact, as a convention, or as a precondition making measurements in geometry possible. Since Henri Poincaré defined conventions as principles guided by experience, the question arises in which sense experiential data can serve as the basis for the constitution of geometry. Helmholtz considered muscular activity to be the basis on which the form of (...) space could be construed. Yet, due to the problem of illusion inherent in the subject’s self-assessment of muscular activity, this solution yielded new difficulties, in that if the manifold is abstracted from rigid bodies which serve as empirical justification of the geometrical notion of space, then illusionary bodies will produce fictive manifolds. The present article is meant to disentangle these difficulties. (shrink)

Newton’s physics is based on two fundamental concepts: mass and force. In the _Principia_ Newton explores the propoerties of several types of force. The most important of these are forces that produce accelerations or changes in the state of motion or of rest of bodies. In Definition 4 of the Principia, Newton separates these into three principal categories: impact or percussion, pressure, and centripetal force. In the Principia, Nwton mentions other types of forces, including (in Book 2) the forces (...) with which fluids resist motions through them. Of a different sort is Newton’s „force of inertia“, which is neither an accelerative force nor a static force and is nit, properly speaking in the context of dynamics, a force at all. (shrink)

We affirm the dynamical systems approach taken by Feldman and Levin, but argue that a more mathematically rigorous and standard exposition of the model according to dynamical systems theory would greatly increase readability and testability. Such an explication would also have heuristic value, suggesting new variations of the model. We present one such variant, a new solution to the redundancy problem.

John Granville's first book is unique on several counts. First, it's not simply a history of science, but rather a history of our evolving unerstanding of motion. It's unique in the detailed explanations given to common scientific riddles-explanations aimed to help students avoid catastrophic collisions with these concepts in college. It's unique in that it resents the philosophies on which the major scientific paradigm shifts rest. It's unique in its presentation from Thomas Kuhn's point of view (i.e., his (...) class='Hi'>concept of world view and paradigm shifts as presented in his classic work The Structure of Scientific Revolutions). The book begins with an informal discussion of Kuhn's notion of world view, and various concepts relevant to his thesis concerning the nature of scientific revolutions; but, the Discovery of Motion proper begins with ancient Egyptian and Greek preparations for Aristotle (here the dialectic of Parmenides and Plato are given special attention). A survey of Aristotle and his science of motion follows (i.e., his theory of nature and natural philosophy). Included in this part of the book are the works of such notables as Archimedes and Ptolemy. The Copernican revolution, including the works of Galileo, Kepler and Newton is, of course, presented from the viewpoint of Kuhn's paradigm shift. Four chapters concerning Newtonian motion are the highlight of the first half of the book. It is here Granville's original aim, of explaning puzzling scientific phenomena to young students, is realized-but now this material serves another purpose. These chapters not only clarify Newton's world view but expose phenomena that were virtually invisible to the peripatetics...and will eventually expose reasons for the ambivalence and frustration that accompany scientific revolutions. Granville then turns to philosophical developments that led to our modern view of the world. This part of the book covers the evolution of empiricism from Bacon to Hume (with Descartes' rationalism thrown in for contrast). Kant's epistemology concludes this philosophical survey, deliberately leading the plot back toward the classical viewpoint. Finally, developments of the nineteenth century that led to the so-called Second Scientific Revolution are considered. The final chapter is a unique presentation of Einstein's relativity theory, where the incompatibility of this theory with Newtonian physics, and the reason why relativity must take precedence, are discussed. Granville compares the opposition to the Copernican revolution with twentieth century opposition to the Einsteinian revolution. The book reveals that, after building detailed understanding of classical Newtonian phenomena, opposition to a shift of world view is an understandable human reaction. (shrink)

Zeno’s paradoxes of motion, allegedly denying motion, have been conceived to reinforce the Parmenidean vision of an immutable world. The aim of this article is to demonstrate that these famous logical paradoxes should be seen instead as paradoxes of immobility. From this new point of view, motion is therefore no longer logically problematic, while immobility is. This is convenient since it is easy to conceive that immobility can actually conceal motion, and thus the proposition “immobility is (...) mere illusion of the senses” is much more credible than the reverse thesis supported by Parmenides. Moreover, this proposition is also supported by modern depiction of material bodies: the existence of a ceaseless random motion of atoms—the ‘thermal agitation’—in the scope of contemporary atomic theory, can offer a rational explanation of this ‘illusion of immobility’. Our new approach to Zeno’s paradoxes therefore leads to presenting the novel concept of ‘impermobility’, which we think is a more adequate description of physical reality. (shrink)

Thomas Hobbes based his natural philosophy on definitions and general principles of matter in motion, which he refrained from calling “laws of nature.” Across the channel, René Descartes had presented his own account of matter in motion in such a way that laws of nature play a central causal-explanatory role. Despite some notable differences in the two systems of natural philosophy, the content of the three Cartesian laws of nature is shared by Hobbesian principles of motion. Why (...) is it the case that Hobbes never ‘transferred’ the concept of law of nature from the sphere of civil society to the realm of nature? What is the status of the Hobbesian principles of motion if they are not laws? Answering these questions is the main aim of this article. It is shown that Hobbes made available an importantly different and genuinely original way to do natural philosophy, which renders it free of metaphysics and eschews the need to ground it in anything other than ‘natural reason’. Briefly put, Hobbes took the category of ‘laws of nature’ to involve commitments that cannot be met in the natural world, unless natural philosophy loses its autonomy from theology and metaphysics. (shrink)

Basic Concepts of Ancient Philosophy presents a lecture course given by Martin Heidegger in 1926 at the University of Marburg. First published in German as volume 22 of the collected works, the book provides Heidegger's most systematic history of Ancient philosophy beginning with Thales and ending with Aristotle. In this lecture, which coincides with the completion of his most important work, Being and Time, Heidegger is working out a way to sharply differentiate between beings and Being. Richard Rojcewicz's clear and (...) accurate translation offers English-speaking readers valuable insight into Heidegger's views on Ancient thought and concepts such as principle, cause, nature, unity, multiplicity, Logos, truth, science, soul, category, and motion. (shrink)

This paper examines Newton's argument from the phenomena to the law of universal gravitation-especially the question how such a result could have been obtained from the evidential base on which that argument rests. Its thesis is that the crucial step was a certain application of the third law of motion-one that could only be justified by appeal to the consequences of the resulting theory; and that the general concept of interaction embodied in Newton's use of the third law (...) most probably evolved in the course of the very investigation that led to this theory. (shrink)

The study of how languages differ in their portrayal of motion events has received much attention since Talmy provided the first detailed account of the phenomenon. Interest has extended from real, or factive motion, to imagined or fictive motion, and from there to metaphorical motion, in which experience in one sensory domain is understood in terms of motion. Studies of metaphorical motion have, however, concentrated so far on a limited number of sensory domains, principally (...) vision, and drawn data from a limited number of textual genres. The aim of this study is to identify the extent to which motion expressions are employed to express organoleptic sensory experiences, that is experiences of taste and smell. Drawing on analytical categories put forward by Talmy in his treatment of Satellite- and Verb-framed languages and on treatments based on Cognitive Metaphor Theory, and particularly the concept of ‘embodiment’, we investigate the variety and complexity of organoleptic Paths evidenced in two self-built corpora of craft beer reviews, one in Spanish, the other in English. We also compare the level of complexity evident in these sensory Path types with those of another, closely related, sensory domain: vision. The study finds, in line with related studies, that English has greater variety and complexity of sensory Paths than Spanish. A more unexpected result is the finding that organoleptic Paths are more varied and complex than visual Paths. This finding, then, may encourage us to reconsider Path complexity differences in sensory domains as a multifactorial issue and not simply as a cognitive-linguistic phenomenon. It is proposed here that external factors such as genre, or specifically, its communicative functions and linguistic constraints, coupled with the unique ‘perceptual landscapes’ created by each sensory modality, may transcend perceived physical boundaries of a Figure’s trajectory. (shrink)

In this analysis of one of the most difficult and neglected topics in Hegelian studies, Songsuk Susan Hahn tackles the status of contradiction in Hegel's ...

This study is concerned with 'nature' specifically as the subject-matter of physics, or natural science, as described by Aristotle in his "Physics". It also discusses the definitions of nature, and more specifically physical nature, provided by Avicenna and Averroes in their commentaries on Aristotle's "Physics". Avicenna and Averroes share Aristotle's conception of nature as a principle of motion and rest. While according to Aristotle the subject matter of physics appears to be nature, or what exists by nature, Avicenna believes (...) that it is the natural body, and Averroes holds that the subject matter of physics or natural science consists in the natural things, in what constitutes a slight shift in focus. O presente artigo trata da 'natureza' enquanto objeto da física, ou da ciência natural, tal como descrita por Aristóteles na "Física". Também trata das definições da natureza, especificamente a natureza física, fornecidas por Avicena e Averróis nos seus comentários à "Física" de Aristóteles. Avicena e Averróis partilham da conceção da natureza de Aristóteles enquanto princípio de movimento e repouso. Enquanto para Aristóteles o objeto da física parece ser a natureza, ou aquilo que existe por natureza, Avicena defende que é o corpo natural, e Averróis afirma que o objeto da física, ou ciência natural, consiste nas coisas naturais, apresentando uma ênfase algo diferente. (shrink)

In a recent article in this journal, Barbara Lariviere offers a very useful distinction between two ways of understanding the claims that Leibniz, or relational theorists in general, might wish to make about the nature of motion and the structure of space and time; viz., There is no real inertial structure to space-time.and There is a real inertial structure to space-time, but it is dynamical rather than absolute.Citing the authority of Weyl, the author argues that L1 is untenable; indeed, (...) the argument purports to show that if L1 were true, then there would be no coherent basis for a theory of motion, not even a relational theory. My main goal in this note is to point out why this argument is mistaken while at the same time sketching the real reason why the relational conception of motion is untenable. In addition I will offer a few remarks about the relevance of L2 to the absolute-relational controvery. (shrink)

In this reassessment of Descartes' debt to his mentor Isaac Beeckman, I argue that they share the same basic conception of motion: the force of a body's motion—understood as the force of persisting in that motion, shorn of any connotations of internal cause—is conserved through God's direct action, is proportional to the speed and magnitude of the body, and is gained or lost only through collisions. I contend that this constitutes a fully coherent ontology of motion, (...) original with Beeckman and consistent with his atomism, which, notwithstanding Descartes' own profoundly original contributions to the theory of motion, is basic to all Descartes' further work in natural philosophy. (shrink)

The concept of impetus denoted the transmission of a power from the mover to the object moved. Many authors resorted to this concept to explain why a projectile keeps on moving when no longer in contact with its initial mover. But its application went further, as impetus was also appealed to in attempts to explain the acceleration of falling bodies or the motion of the heavens. It was widely applied in Renaissance natural philosophy, but it also raised (...) a number of ontological questions concerning its precise nature. (shrink)

The concept of molecular structure is fundamental to the practice and understanding of chemistry, but the meaning of this term has evolved and is still evolving. The Born–Oppenheimer separation of electronic and nuclear motions lies at the heart of most modern quantum chemical models of molecular structure. While this separation introduces a great computational and practical simplification, it is neither essential to the conceptual formulation of molecular structure nor universally valid. Going beyond the Born–Oppenheimer approximation introduces new paradigms, bringing (...) fresh insight into the chemistry of fluxional molecules, proteins, superconductors and macroscopic dielectrics, thus opening up new avenues for exploration. But it requires that our ideas of molecular structure need to evolve beyond simple ball-and-stick-type models. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:THE CONCEPT OF PERSON IN ST. THOMAS AQUINAS: A Contribution to Recent Discussion* ST. THOMAS AQUINAS accepted and consistently defended Boethius' definition of person: "persona est substantia individua rationalis naturae." St. Thomas' analysis of this definition necessarily involves metaphysical questions because of the implications of the terms " substance" and " nature" and moreover it manifests the inescapahle imprint of the theological problematics which surrounded the issue (e.g. (...) the Trinity and the hypostatic union). Both of these influences, metaphysical and theological, have engendered problems of interpretation and criticism. Contemporary discussions of person largely either continue the scholastic controversies or adopt a modern perspective from which to expose apparent contradictions in St. Thomas' doctrine. The purpose of this article will be limited to a consideration of the metaphysical problems concerning the relationship between individual substance, universal, nature, and existence. It is hoped that such a clarification will resolve not only the neoscholastic controversies, but also some of the contemporary problems. I. BOETHIUS' DEFINITION OF PERSON AND ST. THOMAS' EXPLANATION A. BOETHIUS' DEFINITION Boethius develops his definition of person in the Liber contra Eutychen et N estorium after a careful consideration of na- * I have to thank cordially Father Brian Shanley, 0.P. for having revised completely this English version, devoting much time and energy to fit the text and the footnotes to the style of The Thomist. He adapted the version in good style and verified the Latin quotations. 435 436 HORST SEIDL ture and substance.1 In the first chapter he sets out to define nature and discovers four possible meanings. The first and broadest definition, embracing both substances and accidents, describes nature as belonging to all things which by their being can be in some way or another be comprehended by reason: "natura est earum rermn quae, cum sint, quoquo modo intellectu capi possunt." A second definition, comprising substances alone both corporeal and incorporeal, describes nature as anything that can effect or suffer something: " natura est vel quod facere vel quod pati possit." A third sense, taken from the Aristotelian analysis of the motion of natural substances, describes nature as the immanent principle of movement : "natura est motus principium per se et non per accidens." Finally, nature can also refer to the formal cause which provides the specific difference: " natura est unam quamque rem informans specifica differentia" (cf. ST Ia. 29, I ad 4). It is this last sense which is most important. In sum, "nature" is a broad term encompassing both composite beings and their causes. Boethius continues in chapter two by first narrowing the relevant sense of nature to substances (thus excluding accidents ) and then presenting a complete division of substances. The major distinction is between corporeal substances and incorporeal substances. Corporeal subdivides further into inanimate and animate, with animate dividing. into insensitive and sensitive and the latter dividing finally into irrational and rational. Incorporeal subdivides into rational and irrational (the life-principle of animals), with rational incorporeal substances being further distinguished into those that are immutable by nature (the Creator) and those that are not so by nature (the human soul and angels) but may become so by virtue of the immutable substance. Boethius then argues that person cannot be affirmed of inanimate beings or irrational animals. A 1 All citations from Boethius are taken from the Loeb text in Boethius: Theological Tractates and the Consolation of Philosophy, ed. H. F. Stewart and E. K. Rand (Cambridge: Harvard University Press, 1918). THE CONCEPT OF PERSON IN ST. THOMAS AQUINAS 437 final distinction of :substance into universal and particular leads to the conclusion that person must refer to an individual. Thus the background is set for the definition of person which opens the third chapter: " naturae rationalis individua substantia." Person must be an individual substance of a certain nature, namely rational, which nature accounts for the form or specific difference of the particular substance (the fourth meaning of chapter 1). The connection of this definition with Aristotle 's definition of man as a rational animal is unmistakable. It should also be noted that this definition of person is applicable not only to man, in whom the rational nature is not identical with his substance, but also to the... (shrink)

Resumen En este trabajo evaluamos el impacto que la adopción de la relatividad del movimiento tiene en la metafísica de Leibniz. En particular argumentamos que el abandono de la comprensión absolutista del mismo anula su noción juvenil de sustancia corpórea. En primer lugar analizamos cómo entiende Leibniz las nociones de cuerpo y movimiento en el periodo juvenil y defendemos que la comprensión absolutista de este último constituye una piedra angular en su primera concepción de la sustancia corpórea. En segundo lugar (...) exponemos los argumentos leibnizianos a favor de la relatividad del movimiento durante el período parisino y mostramos su repercusión en el concepto juvenil de sustancia corpórea.In this paper we evaluate the impact of Leibniz's defense of relativity of motion on his metaphysics. We argue that the abandonment of the absolutist position makes void his first notion of corporeal substance. First, we analyze Leibniz's conception of body and movement in his youth and explain how the assumption of absolute motion during these years plays a role in his notion of corporeal substance. Second, we examine his arguments in favor of relativity of motion during the Parisian period and show the repercussion on his first conception of the corporeal substance. (shrink)

This essay develops a interpretation of Leibniz’ theory of motion that strives to integrate his metaphysics of force with his doctrine of the equivalence of hypotheses, but which also supports a realist, as opposed to a fully idealist, interpretation of his natural philosophy. Overall, the modern approaches to Leibniz’ physics that rely on a fixed spacetime backdrop, classical mechanical constructions, or absolute speed, will be revealed as deficient, whereas a more adequate interpretation will be advanced that draws inspiration from (...) an invariantist conception of reality and recent non-classical theories of physics. (shrink)

Jan Patočka appears as a paradoxical figure. A champion of human rights, he often presents his philosophy in quite traditional terms. He speaks of the “soul,” its “care,” and of “living in truth.” Yet, in his proposal for an “asubjective” phenomenology, he undermines the traditional notion of the self that has such rights. The question that thus confronts a reader of Patočka is how to reconcile the Patočka who was a spokesman of the Charter 77 movement with the proponent of (...) asubjective phenomenology. What, in fact, is the conception of selfhood that allows him both to affirm human rights and to deny what has been traditionally conceived as the subject of such rights? This conception, I argue, is that of the self as a specific “motion of existence.” By focusing on how, through motion, we actualize our humanity, he avoids both the naturalistic and the idealistic (subjective) conceptions of the self. (shrink)

This paper focuses on the mathematisation of mechanics in the seventeenth century, specifically on how the representation of compounded rectilinear motions presented in the ancient Greek Mechanica found its way into Newton’s Principia almost two thousand years later. I aim to show that the path from the former to the latter was optical: the conceptualisation of geometrical lines as paths of reflection created a physical interpretation of dia­grammatic principles of geometrical point-motion, involving the kinematics and dynamics of light reflection. (...) Upon the atomistic conception of light, the optical interpretation of such geometrical principles entailed their mechanical generalisation to local motion; rectilinear motion via the physico-mathemat­ics of reflection and the Mechanica’s parallelogram rule; circular motion via the physico-mathematics of reflection, the Archimedean squaring of the circle and the Mechanica’s extension of the parallelogram rule to centripetal motion. This appeal to the physico-mathematics of reflection forged a realist founda­tion for the mathematisation of motion. Whereas Aristotle’s physics rested on motions which had their source in the nature of the elements, early modern thinkers such as Harriot, Descartes, and Newton based their new principles of mechanical motion upon selected elements of the mechanics of light motion, projected upon the geometry of the parallelogram rule for rectilinear and, ultimately, circular motion. (shrink)

Henri Poincaré’s views on the foundations of mechanics and the nature of mechanical explanation were influenced by the work of two of the most renowned nineteenth century scientists, James Clerk Maxwell and Heinrich Hertz. In order then to unravel Poincaré’s views and own contribution to the subject it is important to see the connection between Maxwell ’s and Hertz’s researches on the one hand and Poincaré’s on the other. Consequently, I start this paper with a brief account of Poincaré’s encounter (...) with Maxwell ’s work in electromagnetism. Then, in section 2, I move on to show how Hertz’s work on the foundations of mechanics shaped Poincaré own views. In sections 3 and 4, I formulate Poincaré’s own conventionalist philosophy of mechanics and show how several methodological considerations, especially the search for unity, mitigated his conventionalism. Having thus examined Poincaré’s views on the foundations of mechanics, in section 5 I turn my attention to his notion of mechanical explanation and his proof that a mechanical explanation of a set of phenomena is possible if the principle of conservation of energy is satisfied. I then go on to show how Poincaré secured the possibility of a mechanical explanation of electromagnetic phenomena, and also how, having done so, he ended up with an unlimited number of configurations of matter in motion that could underpin electromagnetic phenomena. The upshot of this paper will be that Poincaré departed from the traditional conceptions on mechanical explanation and defended a purely structural conception, the strong point of which was that it promoted — as the motto of this paper says — the true and only aim of science, namely unity. (shrink)

Margaret Cavendish is widely known as a materialist. However, since Cavendishian matter is always in motion, “matter” and “motion” are equally important foundational concepts for her natural philosophy. In Philosophical Letters (1664), she takes to task her materialist rival Thomas Hobbes by assaulting his account of accidents in general and his concept of “rest” in particular. In this article, I argue that Cavendish defends her continuous-motion view in two ways: first, she claims that her account avoids (...) seeing accidents as capable of generation and annihilation, which she argues is inconceivable; and second, she contends that according to Hobbes’s own view “rest” is an absurd conception since it cannot be drawn from experience. Beyond its function as a defense, I claim that Cavendish’s focused criticism of “rest” shows that she is a perceptive reader of Hobbes’s natural philosophy, insofar as her criticisms undercut the two a priori principles of Hobbesian physics. Finally, I show how her views developed in more detail in Philosophical and Physical Opinions (1663) and Observations upon Experimental Philosophy ([1666] 2001) avoid the worries she raises for Hobbesian materialism. (shrink)

Bessarion’s major philosophical treatise In Calumniatorem Platonis is a systematic approach to Platonic and Aristotelian philosophy written in response to George of Trebizond’s Comparatio Philosophorum Aristotelis et Platonis, which attacked Plato’s authority and proclaimed Aristotle’s superiority. A striking example of this is Bessarion’s attempt to defend Plato against George of Trebizond’s accusation that Plato did not offer sound arguments in favor of the immortality of the soul. In this article, I focus on Plato’s proof of the immortality of the soul (...) in the Phaedrus, as presented by Bessarion in the eighth chapter of the second book of the In Calumniatorem Platonis. The Phaedrusʼ proof is based on soul’s definition as a self-mover: since the soul always moves itself, it is the source of motion and is, therefore, ungenerated, imperishable and immortal. Bessarion’s interpretation of the Platonic proof gives the impression that Bessarion cites the text where Plato argues that the soul is immortal, and he summarises the text where Plato argues that the soul is ungenerated and imperishable. I argue, however, that Bessarion does not offer an original reading of the Phaedrus’ proof, and I also propose that Bessarion’s interpretation reflects his attempt to harmonize the Platonic and the Aristotelian views. (shrink)

Context: The idea to write this paper sprang up in a casual conversation that led to the question of how the word “experience” would be translated into German. Distinctions between the German “Erleben” and “Erfahren,” and their intricacies with “Erkennen” and “Anerkennen,” soon led to the conviction that this was a thread worth pursuing. Problem: Much has been written about the nature of experience, but there is little consensus, to this day, regarding the role of consciousness in the process of (...) experiencing. Although RC acknowledges the significance of tacit or sensorimotor knowledge in the individual’s practical operating, it cannot admit it as a basis to the formation of conceptual structures that, by definition, are conscious. Method: Drawing from our backgrounds in epistemology and psychology, and a shared interest in Piaget’s psychogenetic approach, we investigate the origins and development of human experience, in this case the mastery of space, time, causation, and object-permanency. We focus on how “noticeable encounters” are gauged, reflected upon, and ultimately worked through, consciously or unconsciously, by the “experiencer.” Results: A child’s abilities to enact a certain action pattern in a given situation no more demonstrates a re-presentation of the pattern than does recognition in the case of objects. In his studies with children, Piaget has shown that the Kantian categories of space, time object, and “causality” are co-constitutive of the child’s own motion – and its felt impact – as a means to make the world cohere. Of importance here are the concepts of “effective causality,” felicitous encounters, and agency. Implications: Understanding the circumstances under which some “lived” events, whether self-initiated or striking as if out of nowhere, become noticeable and able affect a person’s life is a daunting task. This joint essay is no more than a conversation-starter and an invitation to further explore the intricacies between agency and causation, sensation and cognition, and, yes, motions and emotions in the making of consciousness itself. (shrink)

This useful anthology comprises seventy-nine selections arranged under three headings. Part I is titled "Ancient and Classical Ideas of Space"; part II, "The Classical and Ancient Concepts of Time"; part III, "Modern Views of Space and Time and their Anticipations." According to the general editors of the Boston series, R. S. Cohen and Marx W. Wartofsky, Capek’s choice of contents was governed by the desire to show that "parts of our view of nature greatly and mutually influence other parts, and (...) that our conception of the world keeps evolving. Thus, ideas of time intertwine with ideas of space, and both with ideas of matter and force." F. M. Cornford’s essays, "The Invention of Space" and "The Elimination of Time by Parmenides," introduce parts I and II respectively. In part I, while Descartes, Pascal, Gassendi, Newton, etc., speak for themselves, the ancients and medievals are given other mouthpieces—Duhem’s monumental Le système du monde, for Plato, Aristotle, and the medievals; C. Bailey, for Leucippus, Epicurus and Lucretius; Koyré, Höffding, Jammer, for the period from Bradwardine to William Gilbert. On the subject of time, however, both ancient and classical authors are allowed to express their opinions in their own words, with the understandable exception of the Stoics. Part III begins with the prerelativistic critique of Newton as well as the well-known Clarke-Leibniz discussion on the nature of space and time. This third part, however, is dominated largely by the implications of Einstein’s general and special relativity theories. For instance, we have Minkowski’s "Union of Space and Time." Four items, at least, are devoted to the twin-paradox. Some argue for a static, subjective, or even idealistic conception of space-time whereas positivists like Frank attack Sir James Jeans’ and other idealistic interpretations of relativity as instances of meaningless metaphysics. Part III concludes with Weyl’s objectivistic interpretation of quantum-mechanical indeterminacy. While it is difficult to find an anthology that will please all readers or teachers, this work goes far towards dealing comprehensively with the subject of space and time. As Cohen and Wartofsky note, what is distinctive of Capek’s approach within the field of philosophy of nature and its history is that "he is greatly appreciative of Bergson, James, Peirce and Whitehead" and though influenced by them, he is also critical because of the "understanding of the philosophical import that contemporary physics brings into our picture of the world." In a lengthy introduction, the editor explains his rationale for each item he includes. In general this is very helpful, but in some instances the suggested historical connections are misleading at best, if not simply false or questionable. Einstein for instance is said to have "rejected any absolute frame of reference which would be a substrate of absolutely simultaneous events... within the context of Michelson’s vain search for the absolute motion of the earth." This seems to imply—as many others have claimed—that the negative results of the ether-drift experiment influenced Einstein in formulating his relativity theory, whereas historians have pointed out that if Einstein referred to the experiment, it would have to be as a confirmation of his theory, since he did not learn of the results obtained by Michelson and Morley until after the publication of his revolutionary paper in 1905. Though there are other generalizations in the introduction which might be open to dispute, Capek’s prefatory remarks are in general helpful, and the essay collection as a whole stands on its own feet. It is valuable, if for no other reason, that a number of the selections appear in English translation for the first time.—A.B.W. (shrink)

This slight volume contains three short essays by the author: “The Idea of Nature In Contemporary Physics”, “Atomic Physics and Causal Law”, and “Classical Education”. Much more than half of the book is given over to a selection of brief readings from Kepler, Galileo, Newton, Huygens, D’Alembert, De la Mettrie, Ostwald, Hertz, and a short historical review by de Broglie of the evolution of quantum mechanics. These readings are meant to illustrate the author’s overall theme which appears to be this: (...) the development of modern science has been marked by a progressive change in the concept of nature. The mediaevals regarded Nature as God’s handiwork: “it would have been thought senseless to ask questions about the material world without reference to God”, Between Galileo and Newton a quite new outlook arose which encouraged the belief that an accurate and exhaustive account of Nature could be made in mathematical terms which made reference only to matter and motion. This was the mechanist view of Nature, which led logically to materialism. But modern physics has shown the inadequacy of this view. “The object of research is no longer nature itself, but man’s investigation of nature”. “Nature itself cannot be known”, only “man’s relationship with nature”. The uncertainty principle proves that an “objective” picture of Nature is impossible. The observer and the observed system cannot be clearly separated, and thus we must give up the “Cartesian” distinction between a world of “objective processes in space and time and a mind in which these processes are mirrored”. Thus, we no longer regard “nature” as God’s handiwork nor as an objective space-time-matter manifold but either as the “footprint of man” upon an unknowable substratum, or else as “the transparent clarity of a mathematics that no longer describes the behaviour of elementary particles but only our knowledge of this behaviour”. There is no “philosophy of nature” properly speaking; our knowledge of “nature”, such as it is, is derived from a philosophical consideration of science. (shrink)

It is necessary to take into account the data of science in the theoretical debates conducted by scientists contributing ontological theories in order to develop new approaches to theological issues in Islamic thought. Even, Kalam scholars with the duty of defending and basing the principles of Islam in the classical sense have established a theological understanding intertwined with science in understanding both existence philosophically and the Script theologically. With its discoveries and theories in the last century, it can be argued (...) that modern science has made a serious progress compared to the past. Maintaining its own methodology and paradigm, every scientific discipline has the opportunity to benefit from the methods and data of other disciplines. Consequently, it is possible to assert that Kalam can enjoy the same opportunity too, as long as staying in its own problem area. According to modern science, the motion system is the unity of structures that enable living things to move. Moreover, Bones and joints, which are the structures of the skeletal system, are passive elements of the movement system. Muscles, on the other hand, are the active elements of the movement system and provide the movement of the body by affecting the bones and joints. Muscle tissue shapes the body by adhering to the bones, besides enabling movement activity to occur. One of the most important systems that provide movement is the nervous system. Because for a person to have movement, the muscles must contract, and the muscles must be stimulated for the contraction of the muscles. The system that enables this contraction to occur is the nervous system. Energy is also required for contraction to occur in the human body. Muscles create energy for movement by first providing their energy from the ATP molecule present in the muscle cells. Considering the movement theories of classical theology scholars, it is seen that they shaped the occurrence of human actions through the concept of potency. While the scholars classify power as spiritual/mental and physical strength in terms of its structure, they have characterized it as accident in terms of its nature. In this context, we can say that the equivalent of the power, which is regarded as necessary for the formation of human acts by the theologians, is the movement system in today's science. The spirit/mental that scholars regard as a structure of power for the occurrence of human action can be regarded as the electrical activity that activates muscles when considered within the framework of the movement system of today's science. It is seen that Kalam scholars emphasize physical competence in their definitions of power as well. At this point, Ash'arians defined the power as the soundness of organs, Mu’tazila expressed it as the presence of organs and their being away from disasters, and the Mâturîdîs stated it as the organs being healthy. With these definitions, Kalam scholars mean that a person should also be physically competent to make a movement. The structures scientifically accepted as biological and physical competence in the movement system are the skeletal system, muscles and nervous system. Therefore, we can say that the strength of the physical fitness/well-being emphasized in the definition of power by theologians corresponds scientifically to the skeletal system, muscles and nervous system. One of the issues that Kalam scholars discuss about power is the issue of the accident of power. The reason why they describe power as an accident is to emphasize its impermanence and to show that it was created by Allah. So, in modern science, electrical activity must occur in the brain in order for human organs to move. The occurrence of this electrical activity is independent of the human being. The fact that electrical activity occurs independently from human beings shows that it conforms to Kalam scholars’ definition of the accident. As a result, we can say that the theory of power created by scholars for human movement has a counterpart in the movement system put forward by today's science. (shrink)

Spinoza teaches that the nature of things expresses itself in two ways: in motion and in the world of bodies, on the one hand, and in the intellect with its world of ideas, on the other. Physical bodies are in perpetual motion – arising, changing, disappearing; since the human body also participates in these processes, they are perceived by senses. Spinoza calls the knowledge of sensual properties and duration of the existence of bodies “imagination”. The human mind processes (...) images of bodies with the help of a special kind of abstractions, the “beings of reason”, and then it forms, on the basis of “general concepts”, adequate ideas about the “inner essences” of things, their “order and connec­tion”, i.e. about the causes for the existence of things and their causal relations. Scientific definitions, formulae and models represent these causes and relations in a perfectly pure form – “under a species of eternity”. The article shows how Spinoza delineates the limits of human cognition: they are set by the nature of mind as the idea of the body (man con­sists of two modes of substance – the living body and its idea/mind in the infinite intel­lect). The wider the scope of the body’s activity, the more our mind knows about the world and about itself. The last section of the article describes the relationship of rea­son to virtue, logic to ethics, and characterises the way of life “according to the guidance of reason”. Social life appears to Spinoza as a battle of “passions”, the passive affects of solidarity and enmity. Society cannot live according to the guidance of reason, but our minds can find a form of government that minimises the damage caused by the “blind af­fects” of the rulers and the crowd: Spinoza considered democracy to be the “completely absolute state”. (shrink)