Abstract

To which science, if any, does the intellect’s study belong? Though the student of nature studies every other vital capacity, most interpreters maintain that Aristotle excludes the intellect from natural science’s domain. I survey the three main reasons that lead to this interpretation: the intellect (i) is not realized physiologically in a proprietary organ, (ii) its naturalistic study would corrupt natural science’s boundaries and leave no room for other forms of inquiry, and (iii) it is not, as all other vital capacities are, a principle of movement and rest. I show that the third consideration is the most significant and then defend the view that the student of nature can (and ought to) study the intellect despite its not being a principle of movement. I argue that all of an organism’s vital activities have one and only one nature as their principle, namely, the organism’s soul considered as a unitary whole. The student of nature must concern herself with whatever activities are involved in the coming to be, development, and full realization of these natural forms.