Teratogenesis poses a real problem for all those who wish to see the natural world as a success story, and this includes the Neoplatonists. On their view even ordinary biological reproduction is governed by principles ultimately derived from intelligible Forms. Thus, the generation of terata would seem to call into question the very efficacy of these intelligible principles in the sensible world, since these would seem to be cases in which matter has gotten the upper hand over the intelligible. Although (...) the corpus of surviving Neoplatonic works offers no systematic discussion of the problems surrounding teratology, it is possible to find a number of passages which deal with the explanation of terata. In this article these passages are collected and discussed. It is argued inter alia that, far from capitulating in the face of this putative evidence against the full efficacy of intelligible causes in the world, the Neoplatonists managed to use these phenomena to the advantage of their own views. (shrink)

Aristotle's claim that natural slaves do not possess autonomous rationality (Pol. 1.5, 1254b20-23) cannot plausibly be interpreted in an unrestricted sense, since this would conflict with what Aristotle knew about non-Greek societies. Aristotle's argument requires only a lack of autonomous practical rationality. An impairment of the capacity for integrated practical deliberation, resulting from an environmentally induced excess or deficiency in thumos (Pol. 7.7, 1327b18-31), would be sufficient to make natural slaves incapable of eudaimonia without being obtrusively implausible relative to what (...) Aristotle is likely to have believed about non-Greeks. Since Aristotle seems to have believed that the existence of people who can be enslaved without injustice is a hypothetical necessity, if those capable oí eudaimonia are to achieve it, the existence of natural slaves has implications for our understanding of Aristotle's natural teleology. (shrink)

_ Source: _Volume 63, Issue 1, pp 64 - 86 Five times in the extant corpus, Aristotle refers to a distinction between two ways of being a ‘that for the sake of which’ that he sometimes marks by using genitive and dative pronouns. Commentators almost universally say that this is the distinction between an aim and beneficiary. I propose that Aristotle had a quite different distinction in mind, namely: that which holds between something and the aim or objective it is (...) in the business of producing or achieving, and that which holds between some instrument and the user of that instrument. (shrink)

Más allá de las críticas de Aristóteles a la noción platónica de participación, existen algunos usos de este término que merecen ser atendidos en la obra aristotélica, en tanto suponen no solo una herencia platónica sino también una resignificación en un plexo conceptual diverso. Este trabajo explora el uso aristotélico de la noción de participación como finalidad no intencional en el argumento que sostiene que uno de los modos de alcanzar la inmortalidad es la procreación, para mostrar cómo se puede (...) compatibilizar la adopción de la terminología platónica de la participación con el entramado causal aristotélico. (shrink)

I begin by retracing an argument from Aristotle for final causes in science. Then, I advance this ancient thought, and defend an argument for a stronger conclusion: that no scientific explanation can succeed, if Naturalism is true. The argument goes like this: (1) Any scientific explanation can be successful only if it crucially involves a natural regularity. Next, I argue that (2) any explanation can be successful only if it crucially involves no element that calls out for explanation but lacks (...) one. From (1) and (2) it follows that (3) a scientific explanation can be successful only if it crucially involves a natural regularity, and this regularity does not call out for explanation while lacking one. I then argue that (4) if Naturalism is true, then all natural regularities call out for explanation but lack them. From (3) and (4) it follows that (5) if Naturalism is true, then no scientific explanation can be successful. If you believe that scientific explanation can be (indeed, often has been) successful, as I do, then this is a reason to reject Naturalism. (shrink)

In this paper I outline a role for mechanistic conceptions of organisms in ancient Greek natural philosophy, especially the study of organisms. By ‘mechanistic conceptions’ I mean the use of ideas and techniques drawn from the field of mechanics to investigate the natural world. ‘Mechanistic conceptions’ of organisms in ancient Greek philosophy, then, are those that draw on the ancient understanding of the field called ‘mechanics’ — hê mêchanikê technê—to investigate living things, rather than those bearing some perceived similarity to (...) modern notions of ‘the mechanical.’ I have argued elsewhere that evidence of mechanistic conceptions of the natural world can be found, not only among seventeenth and eighteenth century ‘mechanical philosophers,’ but also—albeit in vestigial form — in some ancient Greek texts. Unfortunately, these reports are slight, often by detractors of this approach, and offer only clues as to the motivational context for employing these mechanical conceptions. Here, my purpose is to suggest what role they might have played in the history of natural philosophy. (shrink)

Kraut and other neo-Aristotelians have argued that there is no such thing as absolute goodness. They admit only good in a kind, e.g. a good sculptor, and good for something, e.g. good for fish. What is the view of Aristotle? Mostly limiting myself to the Nicomachean Ethics, I argue that Aristotle is committed to things being absolutely good and also to a metaphysics of absolute goodness where there is a maximally best good that is the cause of the goodness of (...) all other things in virtue of being their end. I begin by suggesting that the notion of good as an end, which is present in the first lines of the NE, is not obviously accounted for by good in a kind or good for something. I then give evidence that good in a kind and good for something can explain neither certain distinctions drawn between virtues nor the determinacy ascribed to what is good “in itself.” I argue contra Gotthelf that because several important arguments in the Nicomachean Ethics rely on comparative judgments of absolute value—e.g. “Man is the best of all animals”—Aristotle is committed to the existence of both absolute goodness and an absolutely best being. I focus on one passage, Aristotle’s division of goods in NE I 12, which presupposes this metaphysical picture. (shrink)

This dissertation is a collection of essays exploring the role of metaphor in Aristotle’s scientific method. Aristotle often appeals to metaphors in his scientific practice; but in the Posterior Analytics, he suggests that their use is inimical to science. Why, then, does he use them in natural science? And what does his use of metaphor in science reveal about the nature of his scientific investigations? I approach these questions by investigating the epistemic status of metaphor in Aristotelian science. In the (...) first essay, I defend an interpretation of metaphor as a type of heuristic reasoning: I claim that Aristotle uses metaphor to express conditions an explanation in natural science must meet if it is to explain regular, ordered change. These conditions specify the kinds of causes—particularly unmoved efficient causes—which the inquirer into nature is seeking. In the second essay, I look to Aristotle’s use of certain endoxa or common beliefs as explanatory principles in science, and show that his use of these principles is similar to his use of metaphor. In the final essay, I present a historical study of the analogy of art and nature, and I suggest that by looking to how the Greeks understood the role of inquiry in the arts, we can shed some light on Aristotle’s views concerning the method of inquiry he thinks the natural scientist should adopt. (shrink)

The concept of nature (phusis) is ubiquitous in Aristotleʼs work, informing his thinking in physics, metaphysics, biology, ethics, politics, and rhetoric. Much of scholarly attention has focussed on his philosophical analysis of the concept wherein he defines phusis as “a principle or cause of being changed and of remaining the same in that to which it belongs primarily, in virtue of itself and not accidentally” (Phys. 192b21-23) and the implications this has in various parts of his philosophy. It has largely (...) gone unnoticed, or unremarked, that this is not the only understanding of phusis present in his thinking. This thesis argues that in addition to his philosophical understanding of phusis, there is another, pre- theoretic understanding at work. " After unpacking this pre-theoretic understanding, which is best described as ʻthe natural world,ʼ I argue that there are three tensions stemming from this. First, the natural world is, at times, placed in opposition to the human realm, while at other times, the humans are included as part of nature. Second, nature is considered to be both a static state and a dynamic process of change depending on the context, which prompts Aristotle to claim, in different places, that ageing and dying are both natural and unnatural. Third, nature is treated both as an ideal and as something to be overcome. This thesis attempts to bring to light Aristotleʼs pre-theoretic understanding of phusis and to draw out these three tensions. In the end, I suggest that modern confusions about nature may be informed by considering how they are reflected in the work of the first great thinker about nature, Aristotle. (shrink)

In this paper I examine the role of optimality reasoning in Aristotle’s natural science. By “optimality reasoning” I mean reasoning that appeals to some conception of “what is best” in order to explain why things are the way they are. We are first introduced to this pattern of reasoning in the famous passage at Phaedo 97b8-98a2, where (Plato’s) Socrates invokes “what is best” as a cause (aitia) of things in nature. This passage can be seen as the intellectual ancestor of (...) Aristotle’s own principle, expressed by the famous dictum “nature does nothing in vain but always what is best for the substance from among the possibilities concerning each kind of animal” (Progression of Animals II, 704b12-18). The paper is focused around exploring three questions that arise in connection with Aristotle’s use of this optimality principle: (1) How do we understand the concept of “the best” at work in the principle? (2) How does Aristotle conceive of “the range of possibilities”? And, finally, (3) what role does optimality reasoning play in Aristotle’s natural science? Is it a special form of demonstration in which the optimality principle functions as one of its premises, or is it a heuristic device that helps uncover those causally relevant features of a natural substances that ultimately serve as middle terms in demonstrations? In the final section I return to the comparison between Plato and Aristotle and argue that, while both see the natural world as the product of an optimizing agent and while both see this assumption as licensing a pattern of reasoning that appeals to a certain conception of “the best”, they disagree fundamentally over what the optimization agent is and how it operates. Thus, despite their general agreement, it would be a mistake to think that Aristotle simply took over Plato’s use of optimality reasoning without significant modifications. (shrink)

This dissertation explores Aristotle’s use of teleology as a principle of explanation, especially as it is used in the natural treatises. Its main purposes are, first, to determine the function, structure, and explanatory power of teleological explanations in four of Aristotle’s natural treatises, that is, in Physica (book II), De Anima, De Partibus Animalium (including the practice in books II-IV), and De Caelo (book II). Its second purpose is to confront these findings about Aristotle’s practice in the natural treatises with (...) the theoretical picture of the structure of teleological explanations gained from Aristotle’s theory of scientific demonstration. For this purpose a new interpretation of Analytica Posteriora II.11 is presented. This study thereby contributes to recent scholarship on the relation between Aristotle’s philosophy of science and his philosophy of nature, while at the same time adding to our knowledge of Aristotle’s notion of teleology in terms of its explanatory merits and limits. (shrink)

Despite his awareness that organisms are well suited to the habitats they are typically found in, Aristotle nowhere tries to explain this. It is unlikely that he thinks this “fit” (as I call it) between organisms and their habitats is simply a lucky coincidence, given how vehemently he rejects that as an explanation of the fit between organisms’ various body parts. But it is quite puzzling that Aristotle never explicitly addresses this, since it is a question that seemed so pressing (...) to later philosophers and biologists such as Darwin. In this paper I offer a solution to that puzzle. As I argue, the type of habitat an organism lives in is partly constitutive of its essence or nature. The reason Aristotle does not ask, for instance, why marsh-dweller birds live in marshes, is that it is simply constitutive of their nature that they do so. Given that habitat is built into a kind’s essence, the answer to such a question is obvious and the question would have seemed to him trivial. By attending to the details of his biological treatises, I show that Aristotle’s conception of a living being’s essence is much more nuanced than one can glean from his discussions in the Physics and Metaphysics alone. (shrink)

Resumo: Neste artigo apresentamos um quadro geral da defesa de Aristóteles da teleologia natural em Physica II 8, analisando a aporia que ele levanta, neste contexto, no que diz a respeito do fenômeno da chuva e do vir a ser das partes dos animais. Em primeiro lugar, indicaremos os problemas envolvidos, e logo em seguida apresentaremos a nossa soluçáo para eles. Palavras-chave: Causas. Fenômeno acidental. Necessidade. Teleologia.

The text of Physics 2.8 has been recently interpreted so as to restore the reading that Aristotle holds an external, and even an anthropocentric, natural teleology. This reading has been defended by D. Furley, and especially by D. Sedley. In this paper I present several arguments against this interpretation of the text. Thus, I will argue that Aristotle does not claim, in this chapter, that it rains for the sake of the growing of the crop, against an opinion which is (...) currently somewhat extended among interpreters. (shrink)