Abstract

Aristotle is the first person in the history of science to see the study of nature as an articulated complex of interrelated, yet somewhat autonomous, investigations. Understanding why goes to the heart of what is philosophically distinctive about him. Why does Aristotle present the investigation of “the common cause of animal motion” as distinct and independent from a study of the causes of the different forms of animal locomotion, the announced project of De incessu animalium? This article examines the puzzling complexity of Aristotle's investigations of animals, which can offer insights into his metaphysics and epistemology. It first briefly considers the range of Aristotle's writings related to animals, including Historia animalium, Dissections, De partibus animalium, De motu animalium, De incessu animalium, De Anima, and Meteorologica IV. The article then looks at his views on the limits of teleology in biology.