Introduction. This survey is intended to introduce to logicians some notions, methods and theorems in set theory which arose—largely through the work of Saharon Shelah—out of attempts to solve problems in abelian group theory, principally the Whitehead problem and the closely related problem of the existence of almost free abelian groups. While Shelah's first independence result regarding the Whitehead problem used established set-theoretical methods, his later work required new ideas; it is on these that we focus. We emphasize (...) the nature of the new ideas and the historical context in which they arose, and we do not attempt to give precise technical definitions in all cases, nor to include a comprehensive survey of the algebraic results.In fact, very little algebraic background is needed beyond the definitions of group and group homomorphism. Unless otherwise specified, we will use the word “group” to refer to an abelian group, that is, the group operation is commutative. The group operation will be denoted by +, the identity element by 0, and the inverse of a by −a. We shall use na as an abbreviation for a + a + … + a [n times] if n is positive, and na = if n is negative. (shrink)

Exploratory factor analysis is a statistical method widely used in quantitative psychology for the construction of scales and measurement instruments. It aims to reduce the complexity of a data set and explain the common and unique variance using latent variables. In introductory textbooks, exploratory factor analysis is generally presented in contrast to confirmatory factor analysis as a theory- or a hypothesis-generating process that does not require prior background, theory or hypothesis to be performed. The aim of the present (...) paper is to analyze this claim and clarify in which sense exploratory factor analysis is theory-laden. We provide a careful examination of the concepts it involves and thereby establish a clear limitation of the epistemic scope of exploratory factor analysis. (shrink)

Adjoin, to a countable standard model M of Zermelo-Fraenkel set theory (ZF), a countable set A of independent Cohen generic reals. If one attempts to construct the model generated over M by these reals (not necessarily containing A as an element) as the intersection of all standard models that include M ∪ A, the resulting model fails to satisfy the power set axiom, although it does satisfy all the other ZF axioms. Thus, there is no smallest ZF model including (...) M ∪ A, but there are minimal such models. These are classified by their sets of reals, and there is one minimal model whose set of reals is the smallest possible. We give several characterizations of this model, we determine which weak axioms of choice it satisfies, and we show that some better known models are forcing extensions of it. (shrink)

Investigation of the use of intervention data in estimating parameters in a Bayesian network.

For the last thirty years or so, there has been a search underway for a theory that can accommodate our intuitions in regard to moral duties to future generations. The object of this search has proved surprisingly elusive. The classical moral theories in the literature all have perplexing implications in this area. Classical Utilitarianism, for instance, implies that it could be better to expand a population even if everyone in the resulting population would be much worse off than in (...) the original. The main problem has been to find an adequate population theory, that is, a theory about the moral value of states of affairs where the number of people, the quality of their lives, and their identities may vary. Since, arguably, any reasonable moral theory has to take these aspects of possible states of affairs into account when determining the normative status of actions, the study of population theory is of general import for moral theory. A number of theories have been proposed in the literature that purport to avoid counterintuitive implications such as the one mentioned above. The suggestions are diverse: introducing novel ways of aggregating welfare into a measure of value, revising the notion of a life worth living, questioning the way we can compare and measure welfare, counting people’s welfare differently depending on the temporal location or the modal features of their lives, and challenging the logic of axiological and normative concepts. We investigate the concepts and assumptions involved in these theories as well as their implications for population theory. In our discussion, we propose a number of intuitively appealing and logically weak adequacy conditions for an acceptable population theory. Finally, we consider whether it is possible to find a theory that satisfies all of these conditions. We prove that no such theory exists. (shrink)

This volume deals with philosophically grounded theories of animal generation as found in two different traditions: one, deriving primarily from Aristotelian natural philosophy and specifically from his Generation of Animals; and another, deriving from two related medical traditions, the Hippocratic and the Galenic. The book contains a classification and critique of works that touch on the history of embryology and animal generation written before 1980. It also contains translations of key sections of the works on which it (...) is focused. It looks at two different scholarly communities: the physicians and philosophers, that share a set of textual resources and philosophical lineages, as well as a shared problem, but that nevertheless have different concerns and commitments. The book demonstrates how those working in these two traditions not only shared a common philosophical background in the arts curricula of the universities, but were in constant intercourse with each other. This book presents a test case of how scholarly communities differentiate themselves from each other through methods of argument, empirical investigation, and textual interpretations. It is all the more interesting because the two communities under investigation have so much in common and yet, in the end, are distinct in a number of important ways. (shrink)

We investigate a notion called uniqueness in power κ that is akin to categoricity in power κ, but is based on the cardinality of the generating sets of models instead of on the cardinality of their universes. The notion is quite useful for formulating categoricity-like questions regarding powers below the cardinality of a theory. We prove, for universal theories T, that if T is κ-unique for one uncountable κ, then it is κ-unique for every uncountable κ; in particular, it (...) is categorical in powers greater than the cardinality of T. (shrink)

The main international standard-setting agencies for ionizing radiation, the International Atomic Energy Agency (IAEA) and the International Commission on Radiological Protection (ICRP) both subscribe to principles which (they claim) lead to equitable protection for all generations exposed to radioactive pollution. Yet, when one examines the practices both groups support, it is clear that these practices discriminate against future generations with respect to radioactive pollution. After showing (I) that the IAEA and ICRP rhetoric of equity does not match their policies and (...) practices, the essay argues (2) that current people ought to try to treat members of future generations equitably with respect to protection from radioactive pollution. The essay also argues (3) that current policies of permanent disposal of high-level radioactive waste do not meet the second criterion, and therefore (4) that society ought to investigate whether another strategy for managing the waste would provide better equal protection among all generations. (shrink)

The contemporary use of the term ‘complexity’ frequently indicates that it is considered a unified concept. This may lead to a neglect of the range of different theories that deal with the implications related to the notion of complexity. This paper, integrating both the English and the Latin traditions of research associated with this notion, suggests a more nuanced use of the term, thereby avoiding simplification of the concept to some of its dominant expressions only. The paper further explores the (...) etymology of ‘complexity’ and offers a chronological presentation of three generations of theories that have shaped its uses; the epistemic and socio‐cultural roots of these theories are also introduced. From an epistemological point of view, this reflection sheds light on the competing interpretations underlying the definition of what is considered as complex. Also, from an anthropological perspective it considers both the emancipatory as well as the alienating dimensions of complexity. Based on the highlighted ambiguities, the paper suggests in conclusion that contributions grounded in contemporary theories related to complexity, as well as critical appraisals of their epistemological and ethical legitimacy, need to follow the recursive feedback loops and dynamics that they constitute. In doing so, researchers and practitioners in education should consider their own practice as a learning process that does not require the reduction of the antagonisms and the complementarities that shape its own complexity. (shrink)

Generating and Understanding Jokes by Five- And Nine-Year-Olds as an Expression of Theory of Mind The main aim of the presented research is to describe children's ability to generate and understand humorous stories and pictures drawn by their peers and older or younger children. From the perspective of research on children's theories of mind, we assume that in middle childhood we will observe a transition from the basic, copy theory of mind to the interpretative one. We examined 60 (...) five- and nine-year-old children in two phases. During the first phase, the children were asked to draw a funny picture and then justify what made it funny and they had also to present the funny story. Two months later, the children were presented with some pictures chosen after the first phase as the most typical one. They had to justify why these pictures are funny. The obtained results indicate that there is a relation between the age of the subjects and the kind of interpretations of funny pictures which are consistent with the author's intentions. Significantly more nine-year-olds than five-year-olds accurately understood the author's intentions when interpreting his picture. The presented data indicate that changes in the theory of mind take place also in middle childhood and lead to a complex, interpretative theory of mind which can be discovered when researching children's understanding of jokes. (shrink)

Semantic analysis, – inference on the basis of semantic information and world knowledge – still is largely uncharted territory in dy- (3) namic semantics. It is needed, among other things, for the reconstruction of linguistically unspecified parts of the discourse or for restricting ambiguities introduced by prior analysis processes, i.e.

Next-generation observational surveys in astronomy provide empirical data with increasingly high resolution and precision. After presenting the basic methods of population synthesis (via Conroy 2013 and Maraston 2005), this paper argues for several related conclusions. The increased precision of the new methods requires the development of improved theoretical resources and models to provide the richest interpretation of the new data (as argued by Maraston and Strömbäck, 2011). The measurement of physical variables and parameters in population synthesis is best understood (...) using a model-based account along the lines of (Tal 2012) and (Parker 2017). Finally, in the case of population synthesis, improved empirical data does not dispense with the need for theoretical reasoning in post-data analysis. In fact, the high-resolution data used in next-generation population synthesis demands ever richer theories and models, a process that results in hybrid enrichment of theoretical and observational methods and results. (shrink)

Cette lettre articule une réflexion sans aucune prétention sur une dizaine d’années de recherche en éthique appliquée, voire en bioéthique. En se basant sur le savoir expérientiel de l’autrice qui est ergothérapeute et philosophe de formation, cette lettre présente quelques apprentissages faits au cours de ces années qui pourront peut-être aider la génération actuelle et future de bioéthiciens et bioéthiciennes à naviguer entre la théorie et l’empirique, et ce faisant valoriser les personnes confrontées à des enjeux éthiques, faire preuve d’humilité (...) épistémique, tout en mobilisant les idées et théories à même de mettre en lumière les dimensions éthiques de diverses expériences et pratiques. (shrink)

A “third generation” of critical theory can no longer be said to be composed of anything as cohesive and unified as a “school.” Critical theory today continues across a much more diverse spectrum of different philosophical approaches, influences, and questions. Its adherents are no longer united by national, geographical, or even linguistic ties, and do not necessarily even share the basic commitment to radical political change that characterized first generation critical theory. How, then, ought one (...) to characterize the spectrum of philosophers, social and political theorists, and literary critics who could be said to make up a “third generation” of the Frankfurt School? (shrink)

This paper aims to contribute to the development of a “third-generation” rational choice theory by introducing a Multiple Player Approach for analysing collective action problems. Drawing on the foundational first and second generation works of Olson (The logic of collective action, Cambridge University Press, Cambridge, 1965) and Ostrom (Scand Polit Stud 23(1):3–16), we introduce five player types that we believe capture essential empirical features of many real world collective action problems: Blind Riders, Tough Riders, Hard Riders, Easy (...) Riders, and Low Riders. We consider the complex interaction and dynamics that unfold among them. The main novelty of the analysis is to draw attention to the need for active societal support to effectively empower and reward hard riders for resolving collective action problems, particularly when facing external shocks such as the Covid-19 pandemic, Brexit, and financial crises. (shrink)

Aristotle’s theory of spontaneous generation offers many puzzles to those who wish to understand his theory both within the context of his biology and within the context of his more general philosophy of nature. In this paper, I approach the difficult and vague elements of Aristotle’s account of spontaneous generation not as weaknesses, but as opportunities for an interesting glimpse into the thought of an early scientist struggling to reconcile evidence and theory. The paper has (...) two goals: to give as charitable and full an account as possible of what Aristotle’s theory of spontaneous generation was, and to examine some of its consequences; and to reflect on Aristotle as a scientist, and what his comments reveal about how he approached a difficult problem. In particular, I propose that the well-recognized problem of the incompatibility between Aristotle’s concept of spontaneity and his theory of spontaneous generation presents an opportunity for insight into his scientific methodology when approaching ill-understood phenomena. (shrink)

Quantum systems have a holistic structure, which implies that they cannot be divided into parts. In order tocreate (sub)objects like individual substances, molecules, nuclei, etc., in a universal whole, the Einstein-Podolsky-Rosen correlations between all the subentities, e.g. all the molecules in a substance, must be suppressed by perceptual and mental processes.Here the particular problems ofGestalt (shape)perception are compared with the attempts toattribute a shape to a quantum mechanical system like a molecule. Gestalt perception and quantum mechanics turn out (on an (...) informal level) to show similar features and problems: holistic aspects, creation of objects, dressing procedures, influence of the observer, classical quantities and structures. The attribute classical of a property or structure means thatholistic correlations to any other quantity do not exist or that these correlations are considered as irrelevant and therefore eliminated (either deliberately and by declaration or in a mental process that is not under rational control). An example of animposed classical structure is the nuclear frame of a molecule. Candidates for classical properties that arenot imposed by the observer could be the charge of a particle or the handedness of a molecule. It is argued here that at least part of a molecule's shape can begenerated automatically by the environment. A molecular shape of this sort arises in addition to Lamb shift-type energy corrections. (shrink)

This chapter examines the convention concerning the theories of generation and form in the field of natural philosophy in Great Britain during the seventeenth century. It explains that natural philosophers treated the questions of biological generation interchangeably with those coming from chemistry, mineralogy, and meteorology, and considers Antoine Goudin's argument that there are both efficient and final causes at work in the earth's production of rocks that resemble animals or parts of animals. The chapter also suggests that the (...) ‘chymists’ were consistently presented as a challenging third party, alongside Aristotelianism and traditional atomism, in the effort to account for the composition of natural bodies. (shrink)

This informal position paper brings together some recent developments in formal semantics and pragmatics to argue that the discipline of Game Theory is well placed to become the theoretical backbone of Natural Language Generation. To demonstrate some of the strengths and weaknesses of the Game-Theoretical approach, we focus on the utility of vague expressions. More specifically, we ask what light Game Theory can shed on the question when an NLG system should generate vague language.

Third generation prospect theory is a theory of choices and of judgments of highest buying and lowest selling prices of risky prospects, i.e., of willingness to pay and willingness to accept. The gap between WTP and WTA is sometimes called the “endowment effect” and was previously called the “point of view” effect. Third generation prospect theory combines cumulative prospect theory for risky prospects with the theory that judged values are based on the integration (...) of price paid or price received with the consequences of gambles. In TGPT, the discrepancy between WTP and WTA is due to loss aversion-losses have greater absolute utility than gains of the same value. TGPT was developed independently of similar developments by Birnbaum and Zimmermann :145–187, 1998) and Luce. This paper reviews theoretical and empirical findings, to show that TGPT fails as a descriptive model of both choices and judgments. Evidence refutes three implications of TGPT, but they are consistent with configural weight models in which loss aversion is not needed to describe the results. In the configural weight models, buyers place greater weight on lower consequences, attributes or estimates of value compared to sellers, who place greater configural weight on higher aspects of an object or prospect. (shrink)

Cognitive neuroscience is the branch of neuroscience that studies the neural mechanisms underpinning cognition and develops theories explaining them. Within cognitive neuroscience, computational neuroscience focuses on modeling behavior, using theories expressed as computer programs. Up to now, computational theories have been formulated by neuroscientists. In this paper, we present a new approach to theory development in neuroscience: the automatic generation and testing of cognitive theories using genetic programming (GP). Our approach evolves from experimental data cognitive theories that explain (...) “the mental program” that subjects use to solve a specific task. As an example, we have focused on a typical neuroscience experiment, the delayed-match-to-sample (DMTS) task. The main goal of our approach is to develop a tool that neuroscientists can use to develop better cognitive theories. (shrink)

This book provides answers to both normative and metaethical questions in a way that shows the interconnection of both types of questions, and also shows how a complete theory of reasons can be developed by moving back and forth between the two types of questions. It offers an account of the nature of intimate relationships and of the nature of the reasons that intimacy provides, and then uses that account to defend a traditional intuitionist metaethics. The book thus combines (...) attention to the details of the lived moral life – the context in which many of our most pressing moral questions arise, how we deliberate and make moral decisions, the complexities that plague our attempts to know what we ought to do – with theoretical rigor in offering an account of the nature of reasons, how we come to have moral knowledge, and how we can adjudicate between competing positions. (shrink)

COVID19 이후 대면에서 비대면 사회로 생활 공간이 옮겨가는 과정에서 다양한 사회적 문제가 발생했다. 그 가운데 하나가 메타버스 플랫폼에 관한 부모 자녀 사이의 가치충돌 및 정체성에 관한 문제이다. 21세기는 지금껏 한 번도 경험해보지 못한 다양한 세대가 공존하는 시대이다. 기성세대, M-세대, Z-세대 그리고 α-세대에 이르기까지 기술의 발달과 그에 따른 사회의 변화는 짧은 시간 동안 급격한 변화를 가져왔고 그 과정에서 문화 지체가 발생했다. 세대 간에는 보이지 않는 벽이 생겨났으며 그것은 사회적 문제로 거론되기까지 했다. 특히 α-세대 자녀와 부모 사이에서 발생하는 가치충돌의 문제는 부모와 자식이란 (...) 특수성으로 인해 자녀의 가치관 및 정체성 형성에 부모의 그것이 강요될 여지가 있다. 특히 메터버스 플랫폼의 경우 눈에 띌 만큼의 변화와 발전을 가져왔다. 그리고 그것은 메타버스 플랫폼에 관한 부모와 자녀의 경험 세계 및 인식의 차이를 가져왔다. 문제는 다수의 부모가 메타버스 플랫폼에 대한 α-세대 자녀의 경험과 그에 따른 정체성을 제대로 이해하지 못하는 점에서 생겨난다. 그것의 주된 이유 가운데 하나는 메타버스에 관한 부모 세대의 정체성이 과거에만 머물러 있기 때문이다. 이 연구는 곽상의 철학을 빌려와 α-세대 자녀를 둔 부모가 메타버스를 어떻게 이해하고 접근해야 하는지를 이야기하고자 했다. 그리고 문제의 해결 방법으로 곽상의 철학을 활용했다. 그리고 주요 개념으로 곽상의 자연(自然), 성(性), 적(迹), 명(冥)을 사용했다. (shrink)

Cet article associe trois approches issues de l’institutionnalisme historique : l’école historique allemande, l’institutionnalisme américain originel et la théorie de la régulation. Il en dégage les principes méthodologiques partagés et analyse leur application au processus d’élaboration théorique. Codes JEL : B15, B25, B40, B52, E02, Z13.

As the title of this paper indicates, I’m going to discuss what we ought to do in situations where our actions affect future generations. More specifically, I shall focus on the moral problems raised by cases where our actions affect who’s going to live, their number and their well being. I’ll start, however, with population axiology. Most discussion in population ethics has concentrated on how to evaluate populations in regard to their goodness, that is, how to order populations by the (...) relations “is better than” and “is as good as”. This field has been riddled with “paradoxes” which purport to show that our considered beliefs are inconsistent in cases where the number of people and their welfare varies. Derek Parfit’s Mere Addition Paradox is a case in point. The main question of my paper concerns the implication of such axiological paradoxes for normative theories. Do the axiological paradoxes translate into paradoxes for normative theories or will they, as some believe, disappear if we switch to a normative framework? (shrink)

RésuméCet article propose d’aborder différemment la longue querelle de la génération, qui divise les ovistes, les spermistes et les partisans de l’épigénèse tout au long des 17e et 18e en Europe. Plutôt que d’en définir les acteurs à partir des publiants, à savoir les médecins ou naturalistes français, anglais et européens qui contredisent les théories ovistes ou spermistes de leurs pairs, je chercherai à poser quelques questions en marge de cette querelle : que reste-t-il d’une querelle une fois qu’elle semble (...) terminée? Comment une querelle est-elle perçue par les contemporains qui auraient un accès fragmentaire à la querelle? Quel est le rôle des querelles scientifiques dans l’éducation des médecins? Je traiterai ces questions en analysant quatre dissertations rédigées par les étudiants en médecine de la Royal Medical Society d’Édimbourg au 18e siècle. (shrink)

In [01], we gave algebraic characterizations of elementary equivalence for finitely generated finite-by-abelian groups, i.e. finitely generated FC-groups. We also provided several examples of finitely generated finite-by-abelian groups which are elementarily equivalent without being isomorphic. In this paper, we shall use our previous results to describe precisely the models of the theories of finitely generated finite-by-abelian groups and the elementary embeddings between these models.

This paper is a study of higher-order contingentism – the view, roughly, that it is contingent what properties and propositions there are. We explore the motivations for this view and various ways in which it might be developed, synthesizing and expanding on work by Kit Fine, Robert Stalnaker, and Timothy Williamson. Special attention is paid to the question of whether the view makes sense by its own lights, or whether articulating the view requires drawing distinctions among possibilities that, according to (...) the view itself, do not exist to be drawn. The paper begins with a non-technical exposition of the main ideas and technical results, which can be read on its own. This exposition is followed by a formal investigation of higher-order contingentism, in which the tools of variable-domain intensional model theory are used to articulate various versions of the view, understood as theories formulated in a higher-order modal language. Our overall assessment is mixed: higher-order contingentism can be fleshed out into an elegant systematic theory, but perhaps only at the cost of abandoning some of its original motivations. (shrink)

Climate change and environmental degradation are threatening the existence of humanity. The youth have the potential and capability to play a pivotal role in tackling these challenges. Therefore, the current study aims to examine how school and family environmental education can enhance environmental knowledge, willingness to take action, and pro-environmental behaviors among children and young people. The Bayesian Mindsponge Framework (BMF) analytics was utilized on a nationally representative dataset of 2069 Vietnamese primary, secondary, and high school students. The analysis results (...) suggest that school and family environmental education is beneficial for improving students’ environmental knowledge and willingness to take environmental actions. Notably, the effect of school education is more substantial for cultivating environmental knowledge, whereas family education has a stronger impact on raising students’ willingness than school education. Students with higher levels of environmental knowledge are more likely to conduct pro-environmental behaviors only when they are willing to take environmental actions. If students are unwilling to act, higher environmental knowledge is negatively associated with the likelihood of pro-environmental behavior. Following these findings, we call for coordinated education efforts of schools and families to cultivate students’ eco-surplus culture. The education efforts should be implemented along with exposing students to environmental settings and encouraging them to read environmental books. (shrink)

In this article I will show how the goal-directed proof procedure for the propositional fragment of the 'inconsistency-adaptive' logic CLuN(r)from Batens (2005, J. Appl. Logic, 3, 221-250) called pCLuN(r) allows for generating sensible abductive explanations from finite inconsistent theories. Before this is shown, I give a more general account on how goal-directed proof procedures contribute to the study of abduction as backward reasoning. Between these two parts, I describe the goal-directed proof procedure for the propositional fragment of the 'inconsistency-adaptive' logic (...) CLuNr from Batens (2005, J. Appl. Logic, 3, 221-250). (shrink)

"Poststructuralism and Critical Theory's Second Generation" analyses the major themes and developments in a period that brought continental philosophy to the forefront of scholarship in a variety of humanities and social science disciplines and that set the agenda for philosophical thought on the continent and elsewhere from the 1960s to the present. Focusing on the years 1960-1984, the volume examines the major figures associated with poststructuralism and the second generation of critical theory, the two dominant movements (...) that emerged in the 1960s: Althusser, Foucault, Deleuze, Derrida, Lyotard, Irigaray, and Habermas. Influential thinkers such as Serres, Bourdieu, and Rorty, who are not easily placed in "standard" histories of the period, are also covered. Beyond this, thematic essays engage with issues as diverse as the Nietzschean legacy, the linguistic turn in continental thinking, the phenomenological inheritance of Gadamer and Ricoeur, the influence of psychoanalysis, the emergence of feminist thought and a philosophy of sexual difference, the renewal of the critical theory tradition, and the importation of continental philosophy into literary theory. (shrink)

During the past ten years Integrative Social Contracts Theory (ISCT) has become part of the repertoire of specialized decision-oriented theories in the business ethics literature. The intention here is to (1)␣provide a brief overview of the structure and strengths of ISCT; (2) identify recurring themes in the extensive commentary on the theory including brief mention of how ISCT has been applied outside the business ethics literature; (3) describe where research appears to be headed; and (4) specify challenges faced (...) by those who seek to reform ISCT. Key themes in the critiquing literature relate to (a) the identification process for hypernorms; (b) justification of the recognition of hypernorms; (c) proposals for considering meso or meta norms; (d)␣clarification of the relationship between stakeholder concepts and ISCT; (e) problems with potentially unoccupied moral free space; (f) sources of ethical obligation within the ISCT framework; and (g) the potential role for concepts of stakeholder dialogue and engagement. (shrink)

Postulates concerning subjective time perception are formulated, which imply the existence of two interval time scales, objective and subjective, allowing to study various types and magnitudes of distortion of time per- ception.

In this paper I hope to show that a conception of human rights requires a view of the social ideal and the good life, and requires a view of the nature of human community. But what I say in favor of these points hardly amounts to a demonstration. Instead I try to exhibit how we think and talk about rights in general, and what the presuppositions of such thought and talk are. Throughout, I emphasize the pragmatic side of rights-discourse and (...) I try to establish some of the contexts in which such discourse can be significantly employed. Much of what I say is motivated by the consideration that an historically important factor in the generation of various rights, their acknowledgement and implementation, and their extension to increasingly larger segments of the population, has been the claims put forward and the demands made by individuals and groups against individuals and groups. This factor constitutes a suggestive clue for the development of a theory of rights. The treatment here, however, is largely programmatic and fragmentary. The space allotted does not permit more. Moreover, I lead up to—but do not go into—the social ideal and the human community. The title of this essay indicates its limited scope. The above points are, of course, hardly novel; many older writers laid great stress upon them. But of late they have not received the attention that they in my view deserve. What does it mean for someone to maintain a conception of human rights? How is this conception given any concrete content? The answers to these questions, I believe, ultimately lead to a consideration of social ideals and the human community. What follows is meant to stimulate new thinking on these old-fashioned topics. (shrink)

De generationewas the last of the three works published by William Harvey during his lifetime. Although this work on generation was most ambitious, being the product of prolonged and detailed researches, it has received relatively little attention from modern writers. It is generally felt that this work, like William Gilbert'sDe mundo, departs significantly from the more pronounced empirical approach to science which characterized Harvey's first publication,De motu cordis. De generationeshows that Harvey regarded reference to teleological and vitalistic principles as (...) necessary for the solution of crucial problems in biology. In this respect he differed from his contemporaries, the iatrochemical and iatromechanical physiologists, whose non-teleological approach seems, at least superficially, to be in sympathy with the modern biological tradition. The structure and content ofDe generationeare so evidently determined by Aristotle's biological writings, that the work is used to illustrate Harvey's failure to emancipate himself from the philosophical encumbrances of antiquity. (shrink)