Plotinus knew that evils “wander about mortal nature and this place forever” and Schäfer begins his analysis of evil in the Enneads with a very helpful survey of the philosophical schools and literary tradition of ancient Greece which influenced Plotinus. These opening pages thus treat χαχόν as understood by Heraclitus, Plato, and Sophocles. Schäfer stresses the quasi-dualism present in these earlier thinkers in order to show how Plotinus’ insistence that all is derived from a single origin, the One, forced him (...) to give a more precise account of evil’s origins. He therefore set out to explain how the individuality caused by material substantiation is that which brings about an Unwissenheit und Harmoniestörung. The human soul becomes enamored by that which is good and an instance of the One-on-a-lower-level; paradoxically, therefore, evil is brought about not by some competing substance of the One but by its own emanated beauty. As the soul freely chooses diversity over unity, it finds itself more and more “fanned out”, forgetful of its true origin. (shrink)

Every year in connection with the Meeting of the Society of Biblical Literature, a special seminar in gnosticism and later Platonism is held. Ten of the papers presented between 1993 and 1998 have been gathered into this volume. Each essay here examines some particular theme where the exchange between gnostics and later Platonic philosophers has proven particularly rich.

Given that his writings span well over forty years of maturing genius and that the audiences to whom these writings were directed were as varied as the Pelagians, Donatists, and Manichees, not to mention the Sunday flock, is it any wonder that Augustine’s thought found a home in Wittenberg as well as in Trent? T. Kermit Scott, associate professor of philosophy at Purdue University, begins his survey accordingly by acknowledging that “[p]art of the task of interpreting Augustine at this late (...) date is to make plausible how able and informed students have come to such divergent views”. (shrink)

This volume picks up where Vaught's Journey toward God in Augustine's Confessions: Books I-VI concluded. The three chapters of this present work follow the Confessions' three central books, looking at Augustine's Neoplatonic moment of ecstasy, his conversion to Christianity in the Milanese garden, and the shared vision with his mother Monica in the house at Ostia. Very much appreciated in Vaught's approach here is his insistence that Augustine never intended to present these experiences as exclusively his own, but rather as (...) "archetypical expressions" of what occurs whenever any human soul comes upon the divine. The method employed throughout helpfully analyzes these major events within the Confessions in terms of chronological development, how Augustine engages or is engaged by those around him, and those encounters with God which shape a soul's story. (shrink)

In the earlier part of the sixth century, John of Scythopotis collected and edited the writings of Dionysius the Areopagite. Elevated to the episcopacy of the important see of Palestina Secunda, sometime between 538 and 544, John not only gathered these texts of Dionysius, he also lent his own Neochalcedonian Christology to them in order to have one more apostolic authority from which to quote against the Monophysites of his day. Thanks in large part to Beate Regina Suchla's recent work (...) in John's original Syrian, scholars have been able to discern more easily his commentary on the Dionysian corpus from Maximus the Confessor's, as both were unfortunately melded together by Père Migne. This excellent study from Rorem and Lamoreaux thus introduces us to John of Scythopolis: both a compiler and commentator on the thought of Pseudo-Dionysius as well as a theologian and defensorfidei in his own tight. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Learning Christ: Ignatius of Antioch and the Mystery of Redemption by Gregory VallDavid Vincent Meconi S.J.Learning Christ: Ignatius of Antioch and the Mystery of Redemption. By Gregory Vall. Washington, D.C.: The Catholic University of America Press, 2013. Pp. xii + 401. $69.95 (cloth). ISBN: 978-0-8132-2158-8.In the first decade of the first Christian century, the bishop of Antioch found himself surrounded by imperial guards under order to drag (...) him back to Rome to face the consequences of his supposed atheism and traitorous leadership in Christ’s Church. Eusebius’s episcopal list places Ignatius as the third bishop of Antioch, after Saints Peter and Evodius, reigning in Antioch from ca. 70 to 107. Ignatius was a larger-than-life character; even as a child he was supposedly the little boy whom the Lord embraced and held up as an example of heavenly simplicity (Matt 18:2-4). In ten clear and illuminating chapters, Gregory Vall brings the reader through the many legends and apocryphal assumptions surrounding Ignatius and his thinking. Vall’s purpose in writing this work is to show contemporary scholars the levels of richness and theological insight in Ignatius’s relatively small epistolary corpus.The first two chapters treat Ignatius’s use of Scripture and how his reading of the canon plays out in his theology of salvation. “Scripture and Economy” (chap. 1) and “Issues in Ignatian Scholarship” (chap. 2) show not only the massive amount of scholarly attention such a relatively small amount of writing has generated over the centuries, but also why the way Ignatius read and [End Page 321] used Sacred Scripture is still important today. The five guiding loci Vall would have the reader keep in mind are how Ignatius consistently assumes (1) the necessary connection between “theology” (God’s very self) and God’s economy in creation, (2) the link between creation and redemption, (3) the relationship between the Old and New Covenants of God and his chosen ones, (4) the sending of the Son who comes to impart the Spirit, and (5) the life of the pilgrim-sojourner who simultaneously is a future beholder of eternal glory.With these guiding principles in place, Ignatius proves to be a Christian thinker who understands that mystical transformation, and not moral achievement, is what saves us. Accordingly, here we become the students of one who sees himself teaching on behalf of Jesus Christ. This is ecclesia for Ignatius, a place where those called out of the world come together as one so as to be illumined into true Christ-bearers. For Ignatius, therefore, “theology is properly an ecclesial activity and not merely the function of isolated individuals. Our place, then, is to sit alongside Ignatius and contemplate the mystery of redemption with him” (86), thereby developing a visceral sympathy for the things of Christ, drawing near to God and to the people of God in truth and in love. Theology and all Christian activity are consummated in nothing other than Love himself, charity being the only true mark of the theologian.The next three chapters thus turn to Ignatius’s theology of the Godhead: “Jesus and the Father” (chap. 3), “Flesh and Spirit” (chap. 4), and “Faith and Love” (chap. 5). Here, the fundamental theology of Ignatius is handled masterfully. A true contrast to the starts and attempts and to the Gnostic leanings, as well as to the fundamental errors, of the second century, Ignatius amazingly proves to be a loving pastor as well as a sophisticated theologian anticipating accurately later Church formulae. Vall takes care to show how Ignatius advances Pauline insights faithfully while never being afraid to adapt scriptural terms and traditions to meet the challenges of his own flock.Especially important in this middle section is how Ignatius saw the Christian life as teleologically unifying earth and heaven, anticipating Augustine of Hippo’s wordplay of living in spe but not yet in re. Since the Logos is the first and last principle () of reality, but has now even taken on flesh and revealed the fullness of the Father to those still on their way, “the person of Christ, his deeds, and... (shrink)

Anyone interested in the relationship between culture and the intellectual life, has no doubt turned to the works of Christopher Dawson. This collection of ten essays from a recent conference at Oxford acts as an excellent commentary on Dawson’s main academic concerns: recovering history as a philosophical-theological category, and the reintegration of the disciplines so as to provide future generations with an understanding of culture in the truest sense of the term. As John Morrill points out in his introductory essay, (...) Dawson’s “passionate commitment to metahistory and his proclamation of the deeply moral purpose of the historian” —although out of favor in some academic circles—marks his as a unique voice in the search for truth. Dawson’s daughter, Christina Scott, offers the reader some otherwise inaccessible insights into her father’s life, especially regarding his early interest in Augustine’s De civitate Dei and Gibbon’s Decline and Fall. Aidan Nichols, OP provides a bigger picture. His essay, “Christopher Dawson’s Catholic Setting,” highlights the “theology of culture” affecting all parts of English life during the earlier part of this century: the literature, art, architecture, and philosophy that brought “a Catholic sensibility to bear on cultural life”. The Chelsea set, a vibrantly orthodox Catholic salon to which Dawson belonged, centered their thought around the Neo-Thomism of Gilson and Maritain, the literature of Fumet and Julian Green, as well as the social thought of Emmanuel Mounier. (shrink)

It was Plato who informed the Greek philosophical tradition of how the King of Egypt declared that writing will inevitably “implant forgetfulness in men’s souls; they will cease to exercise memory because they rely on that which is written, calling things to remembrance no longer from within themselves, but by means of external marks”. Plotinus likewise knew how these “wise men of Egypt” therefore chose to inscribe only one image in their temples and thus “manifested the non-discursiveness of the intelligible (...) world”. Sara Rappe reminds us that such passages are not infrequent throughout the history of Neoplatonism, suggesting how Plato and his followers struggled to understand the proper use of the written word, the role of images and symbol, as well as the very possibility of the transmission of truth itself. Focusing on the question: “How is intuitive wisdom communicated, especially within the context of a philosophy that repudiates language but continues to practice speculative metaphysics?”, Rappe has produced a helpful work aimed at examining the Neoplatonic hermeneutic. (shrink)

There is something appropriate about Lyotard’s last printed work being his most intimate and revealing. Best known for The Postmodern Condition: A Report on Knowledge, Lyotard died in the April of 1998, leaving his Confession d’Augustin, as Dolorès Lyotard tells us in her “Forewarning,” “scarcely half” finished. Although his New York Times obituary claimed that “awaiting publication is his final book about the ‘Confessions’ of St. Augustine”, this work is less a book about the Confessions as it is an insight (...) into a twentieth century philosopher at the end of his life. Revealed here is a philosopher struggling with the perennial themes of Augustine’s own odyssey: confession as praise and contrition. Perhaps it was Lyotard’s own battle with leukemia and his growing sense of mortality that gave him such insights into Augustine’s early fallacy of thinking of God as encircling and filling all things throughout space that he is able to write, “Such is flesh visited, co-penetrated by your space-time, disturbed and confused with this blow, but steeped in infinity, impregnated and pregnant with your overabundant liquid: the waters of the heavens” ; and regarding the relationship between time and immunity, Lyotard understands that, “God only sees himself in God. Compared with the incomparable brightness, all is night, and speech is noise after the silence of lauds. In the sky of skies, the heaven of heavens, wisdom celebrates its glory. The intelligence with which the angelic creatures are infused is not co-eternal with their creator, but it is exempt from becoming”. Passages like these not only present Augustine in a new light, but invite readers to see themselves in this light as well. (shrink)

These six lectures from the twentyfirst Thomas Spencer Jerome Lectures, an annual series exploring various dimensions of Roman life, provide an invaluable reflection on the relationship, Pelikan’s “counterpoint,” between Genesis and the Timaeus down through the ages. How did the only Platonic dialogue known in its entirety during the Middle Ages influence Judaeo-Christian cosmology? Pelikan chooses to answer this question by first discussing “Classical Rome: ‘Description of the Universe as Philosophy’” and Lucretius’ theological and literary contributions to the history of (...) cosmogonic speculation. In rejecting divine causality, Lucretius’ atomism made room for natural science and for a teleology without explicit reference to direct heavenly agency. Talk of the divine was thus interpreted apophatically and the poetry of de Rerum Natura allowed the truths of what remains for us a “likely story” to be conveyed without a historical or anthropomorphic literalness. Lucretius’ indebtedness to Epicurean materialism is obvious and as Pelikan stresses, “it was from Athens that classical Rome learned to think philosophically about cosmogony”. In “Athens: Geneseôs Archê as ‘The Principle of Becoming’,” Pelikan poses the fundamental questions: Why was the cosmos created? And according to what model had it been created? Plato’s answer is of course that the world of becoming is an image of an immutable and perfect model. This patterning is due to God as Goodness and his willing that all things act together for a purpose. Chapter 3 continues this inquiry with “Jerusalem: Genesis as a ‘Likely Account’ of One God Almighty Maker.” Here Pelikan focuses in on Jerusalem’s contribution of the imago Dei. While the Timaeus defines “the terms of the counterpoint,” Genesis sets “the outline and sequence” of creation, the crowning achievement of which is the rational and sovereign human person. Therefore, whereas Plato may have understood the entire universe to be in God’s image, Moses reserved this exalted position for humanity alone, a dignity Pelikan treats in his discussion of free moral choice. (shrink)

Echoing much of the neo-Thomistic revival of the twentieth century, Fides et Ratio §76 sketches the two main characteristics of a Christian philosophy: it is a type of thinking which simultaneously employs yet always seeks to purify reason and, secondly, it does not close itself off to the concerns and content of revelation. In this way, Pope John Paul II calls for a contemporary understanding of faith which is seen as a virtue freeing human reason from presumption, "the typical temptation (...) of the philosopher." In his latest, Bruno Niederbacher likewise calls for such learned docility in both the human soul as well as in the modern Academy. Divided into six main sections, this work concentrates on two main arguments. First, he shows why Thomas held that faith enables assent to what is and thus proves to be a necessary virtue for correct thinking and action and, secondly, what significance such a claim has for us today. (shrink)

From the outset Marenbon contends that in treating Peter Abelard as a critic and logician only, most scholars have neglected the originality of thought which Abelard brought to the questions of his day: “The aim of this book is to show that... [Abelard’s] was more than a fleeting superficial brilliance. He was a constructive and, at times, systematic philosopher; and, although it is certainly true that he used the methods of logic in treating Christian doctrine, his theology is remarkable for (...) much more than its method”. (shrink)

The head of InterVarsity Christian Fellowship at Harvard, MIT, and Tufts, Curtis Chang turns to the seminal works of Augustine and Thomas as a way of engaging the challenges of postmodernity. He accordingly argues that Aquinas’s De Civitate Dei and Aquinas’s Summa Contra Gentiles were composed precisely to challenge a world growing suspicious, if not negligent, of the Christian story. The rhetorical strategy Chang cleverly uncovers in both DCD and SCG is threefold: both Augustine and Thomas enter their opponents’ unique (...) stories and worldviews, both retell that story by reinterpreting that story on their opponents’ own terms, and finally, each capture that retold tale and tell the eternal story of Christianity in a way that is now intelligible and attractive to their interlocutors. (shrink)

Identity, Morality, and Threat offers a critical examination of the social psychological processes that generate outgroup devaluation and ingroup glorification as the source of conflict. Daniel Rothbart and Karyna Korostelina bring together essays analyzing the causal relationship between escalating violence and opposing images of the Self and Other.

This is the first book to offer the best essays, articles, and speeches on ethics and intelligence that demonstrate the complex moral dilemmas in intelligence collection, analysis, and operations. Some are recently declassified and never before published, and all are written by authors whose backgrounds are as varied as their insights, including Robert M. Gates, former Director of the Central Intelligence Agency; John P. Langan, the Joseph Cardinal Bernardin Professor of Catholic Social Thought at the Kennedy Institute of Ethics, Georgetown (...) University; and Loch K. Johnson, Regents Professor of Political Science at the University of Georgia and recipient of the Owens Award for contributions to the understanding of U.S. intelligence activities. Creating the foundation for the study of ethics and intelligence by filling in the gap between warfare and philosophy, this is a valuable collection of literature for building an ethical code that is not dependent on any specific agency, department, or country. (shrink)

The examination of the cleroterium by Sterling Dow left few questions connected with it untouched. His publications on this ingenious device are as follows: ‘Allotment Machines', Prytaneis: A Study of the Inscriptions Honoring the Athenian Councillors, Hesperia, Suppl. i 198–215, with photographs ; ‘Aristotle, the Kleroteria, and the Courts’, HSCP 1 1–34 ; ‘Kleroterion’, in PW, Suppl. vii, col. 322–328. G. Klaffenbach summarised Dow's analysis in ‘Antike Losungsapparate’, Die Antike xiv 353–355. Prior to Dow, notice of one fragment of a (...) cleroterium was published by B. Tamaro, ‘Pianta Epigrafica dell’ Acropoli', ASAA iv/v 63 nr. 124. P has clear photographs of all remains then known. There are drawings in PW based on the drawing of I and photographs of I, II, III, X, and XI in P—Dow labelled the remains with roman numerals; I follow his labelling. Drawings in P are found opposite the photographs of I and of VI; in H, as frontispiece. Since Dow's publications appeared, there has been no reconsideration of his work nor any re-examination of his reconstruction. This is proof of the quality of his work.In 1960 when I first studied Dow's reconstruction, I relied on the excellent and revealing photographs in P. My own mechanical aptitude made me feel uneasy over certain small details in the reconstruction. (shrink)

With the 2015 publication of Pope Francis's encyclical Laudato Si', many people of faith have found themselves challenged to seek new ways of addressing serious ecological questions -- issues essential to the flourishing of all creatures and not just human beings. This volume brings together fifteen select scholars to consider pressing contemporary environmental concerns through the lens of Catholic theology. Drawing from the early church fathers and other authoritative voices in the Christian tradition, the contributors to On Earth as It (...) Is in Heaven show how ancient, creedal Christianity offers significant insights into our current ecological dilemmas and speaks powerfully about what it means for us today to care well for God's good creation. CONTRIBUTORS and TOPICS Robert Louis Wilken on honoring centipedes and toads -- and all of God's created works Christopher J. Thompson on not reducing creatures to "resources" solely to be "used" Steven A. Long on understanding the created order as a participation in the divine, eternal law Marie George on human stewardship of creation as both kingship and kinship Matthew Levering on "be fruitful and multiply, and fill the earth" -- a good idea? Dawn M. Nothwehr, OSF, on sustainability from a Franciscan perspective John A. Cuddeback on land use and household stewardship Faith Pawl on animal flourishing and suffering Paul M. Blowers on evolutionary theory and the promise of restoration for all creation Christopher A. Franks on Job, poverty, gratitude, and "a gentle life" Jonathan J. Sanford on how Aristotle and Maritain illuminate our obligation to care for creation Paige E. Hochschild on contemplating rather than dominating nature, building on Augustine and George Grant Chris Killheffer on how monastic sources help us rethink gluttony and its remedies David Vincent Meconi, SJ, on the wonderful, awe-filled interrelationship between creatures and their Creator Esther Mary Nickel, RSM, on the liturgy as the space in which all creation is consecrated before the cross of Christ. (shrink)

The reductive, as opposed to deductive, view of logic is the form of logic that is, perhaps, most widely employed in practical reasoning. In particular, it is the basis of logic programming. Here, building on the idea of uniform proof in reductive logic, we give a treatment of logic programming for BI, the logic of bunched implications, giving both operational and denotational semantics, together with soundness and completeness theorems, all couched in terms of the resource interpretation of BI’s semantics. We (...) use this set-up as a basis for exploring how coalgebraic semantics can, in contrast to the basic denotational semantics, be used to describe the concrete operational choices that are an essential part of proof-search. The overall aim, toward which this paper can be seen as an initial step, is to develop a uniform, generic, mathematical framework for understanding the relationship between the deductive structure of logics and the control structures of the corresponding reductive paradigm. (shrink)

We share with Anderson & Lebiere (A&L) (and with Newell before them) the goal of developing a domain-general framework for modeling cognition, and we take seriously the issue of evaluation criteria. We advocate a more focused approach than the one reflected in Newell's criteria, based on analysis of failures as well as successes of models brought into close contact with experimental data. A&L attribute the shortcomings of our parallel-distributed processing framework to a failure to acknowledge a symbolic level of thought. (...) Our framework does acknowledge a symbolic level, contrary to their claim. What we deny is that the symbolic level is the level at which the principles of cognitive processing should be formulated. Models cast at a symbolic level are sometimes useful as high-level approximations of the underlying mechanisms of thought. The adequacy of this approximation will continue to increase as symbolic modelers continue to incorporate principles of parallel distributed processing. (shrink)

We give a novel approach to proving soundness and completeness for a logic (henceforth: the object-logic) that bypasses truth-in-a-model to work directly with validity. Instead of working with specific worlds in specific models, we reason with eigenworlds (i.e., generic representatives of worlds) in an arbitrary model. This reasoning is captured by a sequent calculus for a _meta_-logic (in this case, first-order classical logic) expressive enough to capture the semantics of the object-logic. Essentially, one has a calculus of validity for the (...) object-logic. The method proceeds through the perspective of reductive logic (as opposed to the more traditional paradigm of deductive logic), using the space of reductions as a medium for showing the behavioural equivalence of reduction in the sequent calculus for the object-logic and in the validity calculus. Rather than study the technique in general, we illustrate it for the logic of Bunched Implications (BI), thus IPL and MILL (without negation) are also treated. Intuitively, BI is the free combination of intuitionistic propositional logic and multiplicative intuitionistic linear logic, which renders its meta-theory is quite complex. The literature on BI contains many similar, but ultimately different, algebraic structures and satisfaction relations that either capture only fragments of the logic (albeit large ones) or have complex clauses for certain connectives (e.g., Beth’s clause for disjunction instead of Kripke’s). It is this complexity that motivates us to use BI as a case-study for this approach to semantics. (shrink)

Augustine of Hippo's The City of God is generally considered to be one of the key works of Late Antiquity. Written in response to allegations that Christianity had brought about the decline of Rome, Augustine here explores themes in history, political science, and Christian theology, and argues for the truth of Christianity over competing religions and philosophies. This Companion volume includes specially-commissioned essays by an international team of scholars that provide new insights into The City of God. Offering commentary on (...) each of this massive work's 22 books chapters, they sequentially and systematically explore The City of God as a whole. Collectively, these essays demonstrate the development and coherence of Augustine's argument. The volume will be an invaluable resource for students and scholars of ancient and contemporary theology, philosophy, cultural studies, and political theory. (shrink)

W.V. Quine’s article “Two Dogmas of Empiricism” is one of the most influential works in 20thcentury philosophy. The article is cast most explicitly as an argument against logical empiricists such as Carnap, arguing against the analytic/synthetic distinction that they appeal to along with their verificationism. But the article has been read much more broadly as an attack on the notion..

Philosophers and cognitive scientists address the relationships among the senses and the connections between conscious experiences that form unified wholes. In this volume, cognitive scientists and philosophers examine two closely related aspects of mind and mental functioning: the relationships among the various senses and the links that connect different conscious experiences to form unified wholes. The contributors address a range of questions concerning how information from one sense influences the processing of information from the other senses and how unified states (...) of consciousness emerge from the bonds that tie conscious experiences together. Sensory Integration and the Unity of Consciousness is the first book to address both of these topics, integrating scientific and philosophical concerns. A flood of recent work in both philosophy and perception science has challenged traditional conceptions of the sensory systems as operating in isolation. Contributors to the volume consider the ways in which perceptual contact with the world is or may be “multisensory,” discussing such subjects as the modeling of multisensory integration and philosophical aspects of sensory modalities. Recent years have seen a similar surge of interest in unity of consciousness. Contributors explore a range of questions on this topic, including the nature of that unity, the degree to which conscious experiences are unified, and the relationship between unified consciousness and the self. Contributors Tim Bayne, David J. Bennett, Berit Brogaard, Barry Dainton, Ophelia Deroy, Frederique de Vignemont, Marc Ernst, Richard Held, Christopher S. Hill, Geoffrey Lee, Kristan Marlow, Farid Masrour, Jennifer Matey, Casey O'Callaghan, Cesare V. Parise, Kevin Rice, Elizabeth Schechter, Pawan Sinha, Julia Trommershaeuser, Loes C. J. van Dam, Jonathan Vogel, James Van Cleve, Robert Van Gulick, Jonas Wulff. (shrink)

List of contributors; Acknowledgments; Introduction Robert S. Westman and David C. Lindberg; 1. Conceptions of the scientific revolution from Bacon to Butterfield: a preliminary sketch David C. Lindberg; 2. Conceptions of science in the scientific revolution Ernan McMullin; 3. Metaphysics and the new science Gary Hatfield; 4. Proof, portics, and patronage: Copernicus’s preface to De revolutionibus Robert S. Westman; 5. A reappraisal of the role of the universities in the scientific revolution John Gascoigne; 6. Natural magic, hermetism, and (...) occultism in early modern science Brian P. Copenhaver; 7. Natural history and the emblematic world view William B. Ashworth, Jr.; 8. From the secrets of nature to public knowledge William Eamon; 9. Chemistry in the scientific revolution: problems of language and communication Jan V. Golinski; 10. The new philosophy and medicine in seventeenth-century England Harold J. Cook; 11. Science and heterodoxy: an early modern problem reconsidered Michael Hunter; 12. Infinitesimals and transcendent relations: the mathematics of motion in the late seventeenth century Michael S. Mahoney; 13. The case of mechanics: one revolution or many? Alan Gabbey; Index. (shrink)

A survey of works on automatic theorem-proving in the ussr 1964-1970. the philosophical problems are not touched.

We introduce the $\Sigma _1$ -definable universal finite sequence and prove that it exhibits the universal extension property amongst the countable models of set theory under end-extension. That is, the sequence is $\Sigma _1$ -definable and provably finite; the sequence is empty in transitive models; and if M is a countable model of set theory in which the sequence is s and t is any finite extension of s in this model, then there is an end-extension of M to a (...) model in which the sequence is t. Our proof method grows out of a new infinitary-logic-free proof of the Barwise extension theorem, by which any countable model of set theory is end-extended to a model of $V=L$ or indeed any theory true in a suitable submodel of the original model. The main theorem settles the modal logic of end-extensional potentialism, showing that the potentialist validities of the models of set theory under end-extensions are exactly the assertions of S4. Finally, we introduce the end-extensional maximality principle, which asserts that every possibly necessary sentence is already true, and show that every countable model extends to a model satisfying it. (shrink)