In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 39.4 (2001) 591-592 [Access article in PDF] J. A. Cover and John O'Leary-Hawthorne. Substance & Individuation in Leibniz. Cambridge: Cambridge University Press, 1999. Pp. x + 307. Cloth, $59.95. This close engagement with Leibniz's modal metaphysics is as rewarding as it is challenging. Crisply written and tightly argued, the book aims to achieve a balance between what the authors describe as their historical (...) objective—to ascertain Leibniz's views on individuation against the backdrop of scholastic philosophy—and their philosophical goal—to investigate the issue of individuation more generally by construing Leibniz as a mediary between scholastic and modern metaphysics (4). The result is an original, if at times contentious, reinterpretation of some of the central tenets of Leibniz's philosophy.Since a full discussion of the work is beyond the scope of this review, we focus on one principal line of argument that supports much of what the authors say about Leibniz. Although in early texts Leibniz occasionally shows sympathy for a relational view of individuation (59-63), his dominant position (developed in the seminal Disputatio metaphysica) is that a substance's principle of individuation is wholly internal to it. For the authors, this becomes a benchmark for the interpretation of Leibniz's later philosophy. On their reading, Leibniz's account of individuation rests on two main theses: "the requirement of separability" (that the existence of any substance is metaphysically independent of that of any other substance except God) and "the requirement that whatever individuates a substance must be wholly internal to it" (87).These theses are heavy with consequences. Concerning the ontological status of relations and relational properties (or extrinsic denominations) the authors convincingly argue that Leibniz embraces a reductionist position, according to which relational properties supervene on a substance's intrinsic accidents, i.e., its perceptions and appetitions. Monadic facts about substances suffice to determine all relational facts, and the latter cannot change without a change in the former (though the converse does not hold). Emphasizing Leibniz's statement that God sees in a complete concept the "foundations" of all that can be predicated of a substance, the authors add to this the more controversial claim that extrinsic denominations are not included in the complete concept of an individual substance (83-4). Thus, the identity of any substance is defined by the totality of its intrinsic denominations, and these in turn determine the relations that hold among substances.The centerpiece of the book addresses the modal dimension of Leibniz's theory of individuation. Here the authors argue that Leibniz adheres to what they call "strong essentialism" rather than "superessentialism." The former, like the latter, holds that a substance could not have a complete concept different than the one it has. However, as a "strong essentialist" Leibniz denies that all of a substance's properties are essential to it. Based on their reading of Leibniz's doctrine of relations, the authors maintain that all and only intrinsic denominations are essential to a substance. From this they infer that Leibniz allows for the transworld identity of substances: the same substance can exist in different possible worlds, worlds distinguished by the fact that they contain different constituent substances. This is possible, according to the authors, because the "laws of harmony" impose no constraint on which substances can coexist in a world. A possible world is defined by the collection of individuals supposed to exist in it, and laws [End Page 591] of harmony are merely relational truths supervening on those substances' intrinsic accidents (109).The authors are candid in admitting that their interpretation cannot be reconciled with all of Leibniz's texts. Their goal instead is to give Leibniz the best he can get, metaphysically speaking: "Our efforts here are to show that the architectonic of Leibniz's own metaphysics is properly captured by strong essentialism, that the important and deepest threads of his thinking better hang together on that construal" (103). Yet one might take issue with their view of what count as Leibniz's "deepest" thoughts. Surely it is a... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Leibniz and the Natural World: Activity, Passivity, and Corporeal Substances in Leibniz’s PhilosophyMichael FutchPauline Phemister. Leibniz and the Natural World: Activity, Passivity, and Corporeal Substances in Leibniz’s Philosophy. New Synthese Historical Library, 58. Dordrecht: Springer, 2005. Pp. xiii + 293. Cloth, $149.00.Leibniz's metaphysics has long been viewed as one of the more noteworthy systems of idealism in early modern philosophy. At the ground-floor level of his austere ontology, (...) the standard view maintains that the world is not populated by bodies in space and time, but rather by immaterial, mind-like entities: monads. All the rest is a kind of ontological construction from these simple substances. In this book, Pauline Phemister seeks to overturn the idealist reading of Leibniz and to show that "the true immaterial substances in Leibniz's philosophy" are "monads that exist as animated corporeal creatures" (76). What is ontologically basic for Leibniz are not immaterial monads but "living corporeal substances" with "both mental and physical characteristics" (3).If Phemister is right, one wonders what to make of Leibniz's many endorsements of idealism, as, for instance, when he says that "the explanation of all phenomena solely through the perception of monads... with corporeal substances to be rejected, [is] useful for a fundamental investigation of things" (Leibniz to Bartholomew Des Bosses, June [End Page 162] 16, 1712). This programmatic summary is only one of numerous statements from the late period where Leibniz asserts that ultimate reality is composed of immaterial monads. One possible option would be to posit an indecisive vacillation in Leibniz's late philosophy. Rejecting this, Phemister's strategy for dealing with texts such as these—including the "New System," the "Principles of Nature and Grace," and the "Monadology"—is to dismiss them as the rhetorical subterfuge of a Leibniz who is only exoterically, not privately, a Cartesian (15, 163). Leibniz is a public Cartesian in that he "invites comparison of his rational monads with Cartesian minds" by suggesting that the former, like Cartesian minds, are immaterial and incorporeal (13). This is ostensibly only a ruse Leibniz used to ingratiate himself to a Cartesian audience, hiding from them his real view that genuine substances are always corporeal. We are not told why Leibniz would have expected an idealist philosophy that explains mind-body interaction in terms of a pre-established harmony to be well received by Cartesians, but with this hermeneutical principle in hand, Phemister has deftly insulated her criticism from textual refutation.A more pressing concern is Phemister's principle thesis that "the monad is a corporeal substance" (73). Phemister argues that monads are not complete substances unless they comprise not only a soul-like entelechy, but also primary and secondary matter: a monad is not substantially complete "without the subordinate monads that comprise its organic body" (41). What is important to note in this account is that for monads to be complete substances, they must consist of both a "soul-like aspect" and secondary matter, an organic body (133). This organic body is itself an aggregate of other corporeal substances, which are themselves combinations of entelechies and primary and secondary matter (81). The clear consequence of this is that the monad's existence as a complete substance is dependent upon the existence of other substances, namely, those substances that aggregate to form its organic body, the secondary matter that completes the monad as substance. Hence, the existence of complete substances—the only genuine substances—is ontologically derivative. This conclusion flatly contradicts Leibniz's repeated assertions that substances are ontologically basic, not depending for their existence on the existence of other substances, the very cornerstone of Leibniz's metaphysics.This account is also beset by a vicious circularity. For there to be complete substances, there must first be secondary matter, as secondary matter is a constituent of complete substances. As Phemister puts it, "both primary and secondary matter complete the dominant entelechy," making it a genuine substance (71). Without secondary matter, the dominant entelechy does not exist as a substance. But the existence of secondary matter is itself dependent upon the existence of complete substances, for secondary matter just is an aggregate of corporeal substances (84... (shrink)

Leibniz’s metaphysics is centered on the claim that ultimate reality is composed of mind-like, immaterial substances, monads. While it is universally agreed that such substances are non-spatial, monads’ relation to time is less clear. In some passages, Leibniz suggests that monads are themselves temporal, yet in others he implies that they have only derived temporal properties in virtue of being connected to phenomenal bodies. This has led to predictable disagreements among commentators, some insisting that monads are intrinsically temporal and some (...) insisting that they are intrinsically non-temporal. In this article, I seek to defend the latter interpretation. To do this, I focus on Leibniz’s account of monadic perception and appetition, arguing that the order of monadic states is given by the intentional content represented therein. This view, I suggest, commits Leibniz to the conclusion that monads are intrinsically non-temporal, having only second-order, derivative temporal properties. (shrink)

The philosophical ramifications of modern science—physical, biological, and formal and mathematical—figure centrally in Royce's philosophy. Even the most cursory of glances at his corpus reveals a systematic and deep engagement with many of the leading developments in nineteenth-century science, from the nebular hypothesis, or evolution in both its Darwinian and Spencerian forms, to the work of Cantor and Dedekind. It would perhaps not be going too far to suggest that, from his first to last writings, the development of Royce's philosophy (...) is in no small measure driven by an attempt to come to terms with these developments. And yet, while this has received some attention from the scholarly community, it remains an .. (shrink)

This article examines Leibniz's philosophy of causation with the aim of clarifying how causes are related to their effects. I argue that, much like J. L. Mackie's INUS conditions, Leibnizian causes are members of complex causal conditions. More precisely, Leibniz identifies causes with elements of complex causal conditions, where the complex condition as a whole is sufficient for the effect, and the cause is a necessary part of that condition. This conception of causation is able to incorporate Leibniz's many other (...) definitions of ‘cause’, thereby resolving what appear to be internal inconsistencies in his philosophy of science. Introduction The ingredients of causation Causes and conditions Causes as INUS conditions Conclusion. (shrink)

Leibniz's philosophy of time, often seen as a precursor to current forms of relationalism and causal theories of time, has rightly earned the admiration of his more recent counterparts in the philosophy of science. In this article, I examine Leibniz's philosophy of time from a new perspective: the role that tense and non-tensed temporal properties/relations play in it. Specifically, I argue that Leibniz's philosophy of time is best (and non-anachronistically) construed as a non-tensed theory of time, one that dispenses with (...) tensed temporal properties such as past, present, and future. In arguing for this thesis, I focus on the three facets of Leibniz's philosophy most relevant for evaluating his commitment to a B-theory of time: (1) the nature of change, (2) the reality of the future, and (3) the truth-conditions for tensed temporal statements. Despite prima facie evidence to the contrary, I show that a close examination of Leibniz's views on these topics provides compelling evidence for interpreting his philosophy of time as a B-theory of time. (shrink)

As regards the question of the nature of time, Leibniz's account of monads raises the question of whether they have a temporal order and what this temporal order derives from. His account is generally taken to be an attempt to ground the asymmetric direction of time in a non-temporal sequence, such a chain of causes or reasons. The problem is whether such chains can ground temporal sequences without presupposing what it is that they are supposed to ground. Is his attempt (...) circular, as many commentators have argued? A case can be made that monadic states can be individuated without presupposing time, which would enable him to account for temporal sequences in terms of a non-temporal one. (shrink)

John Norris’s novel and compelling theory on the soul’s immortality is both a central element of his overall philosophical vision and a vital engagement with his contemporaries on the topic. Even so, it has been mostly neglected in the secondary literature. This article aims to fill this lacuna by providing a detailed analysis of how Norris arrives at two seemingly inconsistent theses: the soul is naturally immortal in the sense of being incorruptible but naturally mortal in the sense of being (...) perishable. I focus particularly on how Norris articulates this position in dialogue with a number of Scholastic philosophers whose views he rejects. I conclude by suggesting that Norris’s arguments against these thinkers are less than fully successful. (shrink)

John Norris’s novel and compelling theory on the soul’s immortality is both a central element of his overall philosophical vision and a vital engagement with his contemporaries on the topic. Even so, it has been mostly neglected in the secondary literature. This article aims to fill this lacuna by providing a detailed analysis of how Norris arrives at two seemingly inconsistent theses: the soul is naturally immortal in the sense of being incorruptible but naturally mortal in the sense of being (...) perishable. I focus particularly on how Norris articulates this position in dialogue with a number of Scholastic philosophers whose views he rejects. I conclude by suggesting that Norris’s arguments against these thinkers are less than fully successful. (shrink)

It has recently been suggested that, for Leibniz, temporal facts globally supervene on causal facts, with the result that worlds differing with respect to their causal facts can be indiscernible with respect to their temporal facts. Such an interpretation is at variance with more traditional readings of Leibniz’s causal theory of time, which hold that Leibniz reduces temporal facts to causal facts. In this article, I argue against the global supervenience construal of Leibniz’s philosophy of time. On the view of (...) Leibniz defended here, he adopts a non-modal reduction of time to events, a form of reductionism that entails a strong covariation between a world’s temporal facts and its causal facts. Consequently, worlds discernible with respect to their temporal facts must be discernible with respect to their causal facts, and worlds discernible with respect to their causal facts must be discernible with respect to their temporal facts. This position strongly favors the standard identificatory reduction of time to causation often imputed to Leibniz. (shrink)

Leibniz’s philosophy of time stands at the center not only of his metaphysics but also of his overall philosophy. For this reason, it has attracted the interest of Leibniz scholars and of philosophers of science alike. This concern notwithstanding, scant attention has been paid to what Leibniz himself takes to be a principal philosophical and theological issue in his philosophy of time: the world’s eternity. This article aims to redress this imbalance by ascertaining Leibniz’s views on the beginning, or beginninglessness, (...) of the world. Situating Leibniz’s views against the backdrop of ancient and medieval philosophy, I argue that he rejects traditional arguments seeking to prove the impossibility of an infinite temporal regress. At the same time, Leibniz equally eschews efforts to show that the world cannot have a beginning. Thus, Leibniz denies that the extent of the world’s duration can be decided on purely philosophical grounds. (shrink)

Leibniz’s philosophy of time stands at the center not only of his metaphysics but also of his overall philosophy. For this reason, it has attracted the interest of Leibniz scholars and of philosophers of science alike. This concern notwithstanding, scant attention has been paid to what Leibniz himself takes to be a principal philosophical and theological issue in his philosophy of time: the world’s eternity. This article aims to redress this imbalance by ascertaining Leibniz’s views on the beginning, or beginninglessness, (...) of the world. Situating Leibniz’s views against the backdrop of ancient and medieval philosophy, I argue that he rejects traditional arguments seeking to prove the impossibility of an infinite temporal regress. At the same time, Leibniz equally eschews efforts to show that the world cannot have a beginning. Thus, Leibniz denies that the extent of the world’s duration can be decided on purely philosophical grounds. (shrink)

A review of Futch's book on Leibniz' natural philosophy of time and space.

Following the lead of Hans Reichenbach in the early twentieth century, many authors have attributed a causal theory of time to Leibniz. My exposition of Leibniz’s theory of time in a paper of 1985 has been interpreted as a version of such a causal theory, even though I was critical of the idea that Leibniz would have tried to reduce relations among monadic states to causal relations holding only among phenomena. Since that time previously unpublished texts by Leibniz have become (...) available in which he himself explains temporal precedence in terms of causal precedence, and these texts have been given careful scrutiny by other scholars, such as Jan Cover, Stefano Di Bella and Michael Futch. In this paper I respond to their analyses, and try to make precise the way in which Leibniz’s views on time and on causality fit together in his metaphysics. (shrink)

Most discussions of Leibniz's metaphysics of time and space begin and end with the correspondence between Leibniz and Samuel Clarke, Newton's friend and defender. But Leibniz's ideas about time and space are far richer than this exchange suggests, and Michael Futch shows that the study of those investigations will enhance current discussion among philosophers and cosmologists. Futch's scholarly attention to a wide range of texts is matched by his philosophical acuity. His detailed expositions of texts are not tedious (...) or pedantic because he never fails to bring out their philosophical interest and pertinence. So, too, the book's bibliography is especially valuable.The book opens with a discussion of Newton's substantivalism, which treats time and space as substance-like structures that exist independent of the objects located in them, versus Leibniz's reductionism, which holds time and space to be merely relations, ontologically dependent on the things that exist: space is the order of coexistences, time the order of successions. Futch gives useful historical background that explains why the debate takes the form that it does and what. (shrink)