"The process [of thinking] is like that in which the air modifies the pupil in this or that way and the pupil transmits the modification to some third thing (and similarly in hearing), while the ultimate point of arrival is one, a single mean, with different manners of being."
— Aristotle (384-322 B.C.)
(431a15, p 233)
Reading in Aristotle, Introduction to Aristotle, trans. R. McKeon. (Chicago and London: The University of Chicago Press, 1973).