This dissertation deals with Ibn Taymiyya's theory of the unity of God and of creation, or, as Muslim philosophers have posited the question, the relation between the oneness of God and the diversity that has come out of it. Indeed, Ibn Taymiyya responded to the same ontological question that earlier Muslim philosophers were concerned to answer. Although Ibn Taymiyya was a theologian, he did not encounter quite the same questions as the early kalam theologian whose concern it was to prove (...) the existence of God. The dissertation discusses the forms this question took. (shrink)

First, a brief history is provided of Popper's views on the status of evolutionary biology as a science. The views of some prominent biologists are then canvassed on the matter of falsifiability and its relation to evolutionary biology. Following that, I argue that Popper's programme of falsifiability does indeed exclude evolutionary biology from within the circumference of genuine science, that Popper's programme is fundamentally incoherent, and that the correction of this incoherence results in a greatly expanded and much more realistic (...) concept of what is empirical, resulting in the inclusion of evolutionary biology. Finally, this expanded concept of empirical is applied to two particular problems in evolutionary biology — viz., the species problem and the debate over the theory of punctuated equilibria — and it is argued that both of them are still mainly metaphysical. (shrink)

I defend a new account of constitutive essence on which an entity’s constitutively essential properties are its most fundamental, nontrivial necessary properties. I argue that this account accommodates the Finean counterexamples to classic modalism about essence, provides an independently plausible account of constitutive essence, and does not run into clear counterexamples. I conclude that this theory provides a promising way forward for attempts to produce an adequate nonprimitivist, modalist account of essence. As both triviality and fundamentality in the account are (...) understood in terms of grounding, the theory also potentially has important implications for the relation between essence and grounding. (shrink)

In this paper I propose a notion of propria inspired by Aristotle, on which propria are non-essential, necessary properties explained by the essence of a thing. My proposal differs from the characterization of propria by Kit Fine and Kathrin Koslicki: unlike Fine, the relation of explanation on my account can’t be assimilated to a notion of logical entailment. In disagreement with Koslicki, I suggest that the explanatory relation at issue needs not be necessary. My account of essence is conceptually parsimonious: (...) it illuminates the contribution of essence to explanation without relying on obscure notions such as Aristotelian form or identity. (shrink)

There is a puzzle concerning the essences of fundamental entities that arises from considerations about essence, on one hand, and fundamentality, on the other. The Essence-Dependence Link (EDL) says that if x figures in the essence of y, then y is dependent upon x. EDL is prima facie plausible in many cases, especially those involving derivative entities. But consider the property negative charge. A negatively charged object exhibits certain behaviors that a positively charged object does not: it moves away from (...) other negatively charged objects, towards positively charged objects, etc. It is commonly thought that negative charge disposes its bearer to move away from other negatively charged objects, towards positively charged objects, etc. But if negative charge is fundamental, then no other entities—including the property positive charge—can figure in its essence. We thus have a prima facie puzzle: How can we say anything interesting about the essences of fundamental entities without running afoul of EDL? In this paper, I present and discuss the consequences of EDL for the debate between causal essentialists and quidditists about properties, and propose solutions to the puzzle. (shrink)

A “conceptual spaces” approach is used to formalize Aristotle’s main intuitions about time and change, and other ideas about temporal points of view. That approach has been used in earlier studies about points of view. Properties of entities are represented by locations in multidimensional conceptual spaces; and concepts of entities are identified with subsets or regions of conceptual spaces. The dimensions of the spaces, called “determinables”, are qualities in a very general sense. A temporal element is introduced by adding a (...) time variable to state functions that map entities into conceptual spaces. That way, states may have some permanency or stability around time instances. Following Aristotle’s intuitions, changes and events will not be necessarily instant phenomena, instead they could be processual and interval dependent. Change is defined relatively to the interval during which the change is taking place. Time intervals themselves are taken to represent points of view. To have a point of view is to look at the world as it is in the selected interval. Many important concepts are relativized to intervals, for instance change, events, identity, ontology, potentiality, etc. The definition of points of view as intervals allows to compare points of view in relation to all these concepts. The conceptual space approach has an immediate semantic and structural character, but it is tempting to develop also logics to describe them. A formal language is introduced to show how this could be done. (shrink)

Fine is widely thought to have refuted the simple modal account of essence, which takes the essential properties of a thing to be those it cannot exist without exemplifying. Yet, a number of philosophers have suggested resuscitating the simple modal account by appealing to distinctions akin to the distinction Lewis draws between sparse and abundant properties, treating only those in the former class as candidates for essentiality. I argue that ‘sparse modalism’ succumbs to counterexamples similar to those originally posed by (...) Fine, and fails to capture paradigmatic instances of essence involving abundant properties and relations. (shrink)

Essential properties are usually thought as properties that things must always possess, whereas accidental properties are considered as changeable. In this paper, we challenge this traditional view. We argue that in some important cases, such as social or biological development, we face not only the change of accidents, but also the change of essences. To analyze this kind of change we propose an alternative view on the relations between the modalities and time. Some properties might be necessary or possible for (...) a thing in a classical sense throughout its existence, whereas others might be necessary or possible only for some restricted periods. We distinguish therefore absolute, prospective, retrospective, and relative modalities. As we argue, these non-classical concepts of modality are useful in analysis of some puzzling case of seemingly changing essences. (shrink)

Platonic universals received sympathetic attention at the turn of the century in the early writings of Moore and Russell. But this interest quickly waned with the empiricist and nominalist movements of the twenties and thirties. In this process of declining interest Wittgenstein's theory of family resemblance seemed to serve both as coup de grâce and post-mortem.I propose, however, that family resemblance far from being an adequate refutation of Platonic universals can actually be accommodated within a Platonic theory properly conceived. But (...) first for some caveats and qualifications.What family resemblance actually succeeds in refuting is not Platonic universals but Aristotelian or empiricist, or, generally, abstractive or commutative, universals. An abstractive universal is a universal arrived at by induction from identical characteristics in numerically distinct individuals. An abstractive universal is a common property and nothing else. This conception of a universal has several consequences. First, abstractive universals are ontologically dependent on particulars. (shrink)

The prevailing mentality that technology is applied science is a legacy from the Platonic and Aristotelian conceptions of knowledge and science. The pre-eminence of the ideal of scientific knowledge led in the modern era to the practice of regarding technology as a subset of science, and thereby to the practice of overlooking the integrity of technology. ;I assess the adequacy of classical and pragmatic interpretations of knowledge, science, and technology, and point to new terms of discourse which properly allow for (...) the integrity of technology. One of the central differences between the early Greek and the modern philosophical conceptions is that for the classical Greeks there were two separate domains, the domain of knowledge, or episteme, and the domain of productive action, or techne. With the moderns, increasingly, and culminating in a certain sense with Dewey, we have a powerful description of practice and productive action that shows the early Greek distinction between episteme and techne to be artificial, to be itself technological. Whereas traditionally knowledge and action comprise two distinct domains, my contention is that technology constitutes the proper end of philosophical analysis, underlying both knowledge and action. ;In chapter two I demonstrate the senses in which Plato and Aristotle respectively articulate the meaning of episteme, ascribing it a primacy over techne. Analyzing the theoretical element in the classical Greek conceptions of knowledge, I examine how these conceptions have shaped early understandings of science and technology. ;In chapter three I examine the understanding of techne in the writings of Plato and Aristotle, and correct a prevailing misinterpretation of the significance of techne for both thinkers. I argue that for Plato and for Aristotle, techne provides a recurring context for episteme, that is to say there is no episteme without techne. ;In chapter four I show through the eyes of Dewey how the primacy given to episteme contributed to contemporary misunderstandings of technology. I demonstrate how Dewey dislodges the episteme-based conception of technology and shows that technology as productive action is the center of philosophical discourse. (shrink)

A theory purporting to solve the problem of universals must be able to explain predication, recurrence, and classification. How Platonism does this is well known. Here I take a hard look at an attempt by M.J. Cresswell to give an Aristotelian answer and show it to be a complete and utter failure. The answer does not eliminate commitment to universals and it is only half an answer anyway because it does not cover relational predicates, an omission that Russell noted dooms (...) answers by other philosophers as well. (shrink)

Essentialism--understood as the doctrine that there are natural kinds--can be sustained with respect to the most fundamental physical entities of the world, as I elsewhere argue. In this paper I take up the question of the existence of natural kinds among complex structures built out of these elementary ones. I consider a number of objections to essentialism, in particular Locke's puzzle about the existence of borderline cases. A number of recent attempts to justify biological taxonomy are critically examined. I conclude (...) that theory partially justifies such taxonomies but supports only a weaker form of essentialism. (shrink)

(1988). The explanative recourse to realism. International Studies in the Philosophy of Science: Vol. 3, No. 1, pp. 2-18. doi: 10.1080/02698598808573321.

This paper examines three exemplary theories of living organization with respect to their common feature of defining life in terms of metabolic closure: autopoiesis, (M, R) systems, and chemoton theory. Metabolic closure is broadly understood to denote the property of organized chemical systems that each component necessary for the maintenance of the system is produced from within the system itself, except for an input of energy. It is argued that two of the theories considered—autopoiesis and (M, R) systems—participate in a (...) hylomorphist pattern of thinking which separates the “form” of the living system from its “matter.” The analysis and critique of hylomorphism found in the work of the philosopher Gilbert Simondon is then applied to these two theories, and on the basis of this critique it is argued that the chemoton model offers a superior theory of minimal life which overcomes many of the problems associated with the other two. Throughout, the relationship between hylomorphism and the understanding of living things as machines is explored. The paper concludes by considering how hylomorphism as a background ontology for theories of life fundamentally influences the way life is defined. (shrink)