The selections contained in these volumes from the papers and letters of Leibniz are intended to serve the student in two ways: first, by providing a more adequate and balanced conception of the full range and penetration of Leibniz's creative intellectual powers; second, by inviting a fresher approach to his intellectual growth and a clearer perception of the internal strains in his thinking, through a chronological arrangement. Much confusion has arisen in the past through a neglect of the develop ment (...) of Leibniz's ideas, and Couturat's impressive plea, in his edition of the Opuscu/es et fragments (p. xii), for such an arrangement is valid even for incomplete editions. The beginning student will do well, however, to read the maturer writings of Parts II, III, and IV first, leaving Part I, from a period too largely neglected by Leibniz criticism, for a later study of the still obscure sources and motives of his thought. The Introduction aims primarily to provide cultural orientation and an exposition of the structure and the underlying assumptions of the philosophical system rather than a critical evaluation. I hope that together with the notes and the Index, it will provide those aids to the understanding which the originality of Leibniz's scientific, ethical, and metaphysical efforts deserve. (shrink)

ABSTRACT In this article, I reply to criticisms of Dean Stretton of the pro‐life argument from substantial identity. When the criterion for the right to life proposed by most proponents of the pro‐life position is rightly understood – being a person, a distinct substance of a rational nature – this position does not lead to the difficulties Stretton claims it does.

I develop the idea of what I call an interpretive praxis as a generalized procedure for analyzing how experimenters can formulate observable predictions, discern real effects from experimental artifacts, and compare predictions with data. An interpretive praxis requires theories – theories not only about instruments and the interpretation of phenomena, but also theories that connect the use of instruments and interpretation of phenomena to high-level theory. I will call all such theories that enable experimentation to work intermediate theories. I offer (...) an account of theory-networks that embrace these intermediate theories and explain their functions. (shrink)

Abstract Islam displaces the ancient idea of time as an implacable enemy with the scriptural image of time as the stage of judgment, a narrow bridge of accountability stretched between creation and eternity. The stark contrast of temporal evanescence with all the immutability of eternity challenges Muslim theologians and philosophers of the classic age. The dialectical theologians of the kalam describe time and change atomisti?cally and even occasionalistically, seeking to preserve the absoluteness of the contrast and to avoid compromising the (...) purity of God's creative act and the sheer facticity of its temporal effect. The falasifa, philosophers in the Greek tradition, use Platonic, Aristotelian, and Neoplatonic arguments to reconcile temporality with eternity. Stripped of argument, their emanative and archetypal schemes join the core symbolisms of Islam, but only when accommodated to the Qur'anic ideas of judgment and creation. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Leibniz on Purely Extrinsic DenominationsGary L. CesarzDennis Plaisted. Leibniz on Purely Extrinsic Denominations. Rochester: University of Rochester Press, 2002. Pp. viii + 128 Cloth, $70.00.Interpreting Leibniz is like trying to flatten a balloon without deflating it; press it here and it bulges there. Press one of his controversial principles and problems result for another. Leibniz on contingent and necessary truths exemplifies this difficulty. So does Leibniz's denial that (...) there are "extrinsic denominations which have no foundationin the denominated thing" (NPE).Plaisted questions the meaning and challenges the current interpretations of this principle. Does "foundation" mean "included in a thing," or "reducible to an intrinsic denomination"? Furthermore, what is the thing denominated? Is it the individual concept of a substance, or an intrinsic denomination in the concept of the substance? Leibniz holds, "for all truths the predicate is contained in the subject" (PS) which, in some sense, includes both denominations (Leroy E. Loemker, ed., Gottfried Wilhelm Liebniz: Philosophical Papers and Letters [Dordrecht: Reidel, 1976], 268). This suggests that both denominations have the same status as predicates. However, such statements as, "there is no denomination so extrinsic that it does not have an intrinsic denomination as its basis" (Loemker, 527) and "all extrinsic denominations are founded in intrinsic denominations" (Benson Mates, The Philosophy of Leibniz: Metaphysics and Language [New York: Oxford University Press, 1989], 225) suggest that the former reduce to the latter. The last two quotes seem to trump all hands. But textual citations are seldom enough to settle disputes of this sort.This has inspired two approaches to the question, one reductionistic, the other non-reductionistic. Plaisted adopts a non-reductionistic approach but regards those prior to his as implausible and unsatisfactory (1, 113 n.34). As for reductionism, he claims to "stand [End Page 494] [it] on its head" (1) and denies its "textual merit" (14). Given Plaisted's broad grasp of Leibniz's writings, this is not an oversight of the passages quoted above. Rather, his case depends on reinterpreting the same passages in light of his version of NPE.A reduction, according to some, requires that a relational proposition be logically equivalent (or at least truth-functionallyequivalent) to a set of non-relational propositions. For others, implication is sufficient, i.e., for a given relational proposition z, and two non-relational propositions x and y, it is impossible that (x & y) is true but z false (Mates, 218). In response, Plaisted examines NPE from four angles, including Leibniz's predicate-in-subject notion of truth, the identity of indiscernibles, and two others. However, since all that follows rides on his understanding of PS, let us focus on it.Plaisted's interprets NPE to mean "There are no extrinsic denominations of an individual... that are not included in that individual's concept" (11). To support this, he observes that Leibniz applies PS to all truths and often derives NPE from PS. But to justify substituting "included in" for Leibniz's use of "foundation in," Plaisted elects to interpret PS in a troubling way. Now, Leibniz insists that necessary truths state an identity between a subject and predicate, either explicit or implicit, and that the latter are reducible to the former by an a priori proof of finite length. Leibniz further says that identity, as explained above, is the reason that PS holds for necessary truths. Thus, Plaisted infers that "identity" and "having a reason" are equivalent, that this sense of PS generalizes to all truths (24-25), and claims support for his version of NPE. This is a positive result for Plaisted, for from it he infers that extrinsic denominations are included in the individual's concept as directly as intrinsic denominations, hence the latter cannot serve as the foundation for the former (25ff.). But this is problematic.First, it leads him to affirm that some denominations are both extrinsic and intrinsic (75). This is a strange conclusion to consider positive, for it implies that there are two types of intrinsic plus extrinsic denominations. Surely this strains the boundaries of "textual merit" at least as much as Plaisted charges against reductionists. More importantly, even if the equivalence Plaisted presses holds for necessary... (shrink)

The projection postulate, which prescribes “collapse of the state vector” upon measurement, is not an essential part of quantum mechanics. Rather it is only an optional discarding of certain branches of the state vector that are expected to be irrelevant for the purpose at hand. However, its use is hazardous, and there are examples of repeated measurements for which the conventional application of the projection postulate leads to incorrect results.

The question asked in this article is: what is a parasite?. Defining a parasite requires defining its host at the same time. A difficult question therefore arises about host-parasite relationships. The object of general parasitology is in fact to study the relationship between a host and its parasite. The initial question what is a parasite? has to be reformulated within a conceptual framework, that of relationship. This article is an attempt to transpose into parasitology some concepts which have been profitable (...) in the fields of physics and chemistry. The studies of R. Thom about the individual are also used. Concepts like that of field and principles like that of minimization are probably operational on a high level of organization. The description of host-parasite relationships could benefit from these concepts. (shrink)