In this article, I present in a systematic way Aristotle’s understanding of movement (kinêsis) as efficient cause in the Generation of Animals. This aspect of movement is not disclosed in the approach to movement as an incomplete activity in contrast to energeia, which has been extensively discussed in the literature. I explain in which sense movement is the efficient cause of generation and how this movement is related to the other factors, in particular the source of movement, the seminal fluid, (...) pneuma, and the vital heat, as well as to the form and the soul. The role of movement as efficient cause of generation shows how, for Aristotle, form and soul are inseparable from matter and movement in nature. Explaining the role of movement as efficient cause of generation also helps to make sense of the multiplicity of factors involved in the efficient causality of generation. The key to articulating these factors with one another is the identity of form of the generative movement, which is specifically the same in the source, in the tools, and in the substance that is coming into being. (shrink)

There are two different notions of seed at work in the Generation of Animals: seed as the spermatic residue, which concerns only the male and the female generative contributions, and seed as the kuêma and first mixture of the two generative contributions. The latter is a notion of seed common to plants and animals. The passage in GA I.18, 724b12–22 where Aristotle distinguishes between these two notions of seed has been mistakenly discredited as inauthentic or simply as irrelevant for understanding (...) the seeds of animals. On the other hand, recent studies have rather focused on the seed as spermatic residue, paying little attention to the notion of seed as kuêma. In this paper I defend the authenticity and relevance of this passage and show how understanding the notion of seed as kuêma is essential to have a complete picture of Aristotle’s account of seed. This common notion of seed makes sense of Aristotle’s otherwise puzzling use of the word “sperma” to designate the seeds of plants, the kuêma, the fertilized eggs, and the first mixture of the two generative contributions. It also proves helpful in determining what the word ‘sperma’ stands for in key passages, such as Metaph. IX.7. (shrink)

Journal Name: Apeiron Issue: Ahead of print.

According to Aristotle’s homonymy principle, when we use a common name to refer to wholes and parts that lack the capacity to carry out the function signified by the name, we are using the name in a homonymous way. For example, pictures and statues of a man, or a dead eye, are called “man” and “eye” only homonymously because they cannot carry out their proper function, i.e., to live and to see. This principle serves well Aristotle’s purposes in natural philosophy, (...) for it avoids a reduction of the essence of living bodies and their parts to their material composition and shape. This principle, however, leaves unexplained why we still use those names in common language, despite their homonymy. Using Aristotle’s own comments on homonymy, I will examine the role played by external figure, for it explains why such homonyms are not accidental. In fact, they are correct forms of linguistic usage in non-philosophical contexts. (shrink)