For Aristotle, animals, by contrast to plants, possess a perceptual soul. However, there is disagreement concerning the point at which the perceptual soul is acquired, for him. On one influential interpretation, Aristotle thinks that the perceptual soul is acquired not during the initial formation of the embryo, but at some later stage of its development. On such interpretations of Aristotle’s view, the newly formed embryo is not yet an actual animal, but a plant-like living being or even inanimate matter. We (...) argue, by contrast, that Aristotle views the embryo, from the very beginning, as an actual animal exercising basic nutritive and perceptual functions. We show that this interpretation is consistent with Aristotle’s views on embryogenesis in the GA, HA, PA, and the Metaphysics. (shrink)

Aristotle claims that just as a builder uses ‘tools’ to build a house, so too the soul ‘use[s] heat and coldness as tools’ to build an animal (Generation of Animals 740b25–34). I consider two questions about this claim: (1) what sorts of things does the soul use, and what is it for things like them to be organized? and (2) what philosophical work does this sort of organization do in Aristotle’s account of animal generation? I argue that the soul needs (...) flexible intermediate agents, that it organizes them in a way that exploits their flexibility, and that this is due to the demands of a complex, multi-stage process directed at a single end. (shrink)

How many scientific demonstrations can a single phenomenon have? This paper argues that, according to Aristotle's theory of scientific knowledge as laid out in the Posterior Analytics, a single conclusion may be demonstrated via more than one explanatory middle term. I also argue that this model of multiple demonstration is put into practice in the biological writings. This paper thereby accomplishes two related goals: it clarifies certain relatively obscure passages of the Posterior Analytics and uses them to show how Aristotle (...) explains biological phenomena by reference to both final and material causes in the Parts of Animals. The first part of the paper explains the account of multiple demonstration present in the Posterior Analytics and distinguishes it from another kind of plural explanation rejected by Aristotle. The second part of the paper turns to the biological explanation in the Parts of Animals and shows how Aristotle's account of multiple demonstrations works in practice. The paper thus provides evidence for the claim that the ‘applied’ reasoning on display in the biological works is in harmony with the framework of the logical treatises, and thus may also shed light on questions of the unity of the Aristotelian corpus. (shrink)

I argue that, for Aristotle, virtues of character like bravery and generosity are, like the emotions, properties that require a hylomorphic analysis. In order to understand what the virtues are and how they come about, one needs to take into account their formal components and their material components. The formal component of a virtue of character is a psychic disposition, its material component is the appropriate state and composition of the blood. I defend this thesis against two potential objections and (...) I show that it is relevant for a study of Aristotle’s ethics. (shrink)

It might seem quite commonplace to say that Aristotle identifies fire, air, water and earth as the στοιχεῖα, or ‘elements’ – or, to be more precise, as the elements of bodies that are subject to generation and corruption. Yet there is a tradition of interpretation, already evident in the work of the sixth-century commentator John Philoponus and widespread, indeed prevalent, today, according to which Aristotle does not really believe that fire, air, water and earth are truly elemental. The basic premise (...) of this interpretation is that Aristotle takes fire, air, water and earth to be, in some sense, composite bodies and, as such, analysable into simpler constituents. But, of course, an element of bodies is defined by Aristotle himself as something into which bodies can be analysed, and which does not admit further analysis . So if fire, air, water and earth can be analysed into simpler or more basic constituents, then it would seem to follow that the latter ought to be considered Aristotle's true elements. These are usually identified as the primary contraries hot and cold, dry and wet; many, perhaps most, commentators would insist also upon prime matter as the subject upon which these contraries act. (shrink)

En el presente trabajo nos proponemos analizar el uso que Aristóteles hace en el Protréptico de la analogía entre phýsis y téchne centrándonos para ello en su concepción de la naturaleza como principio de movimiento presentada en la Física. La tesis que intentaremos defender es que el uso de la analogía obedece a la metodología aristotélica de ir de lo más conocido para nosotros a lo más conocido en sí y, por lo tanto, al intento de develar a través de (...) los procesos técnicos cómo llegan a ser los procesos de generación en el caso de los entes naturales. Para probar nuestra tesis, dividiremos el trabajo en dos secciones. En la primera, nos centraremos en el análisis del uso de la analogía y en los supuestos conceptuales que implica. En la segunda parte, nos detendremos en la limitación que esta analogía presenta y, por lo tanto, en la restricción explicativa que supone. (shrink)