Note 20 — APHORISMS—BOOK I ON THE INTERPRETATION OF NATURE AND THE EMPIRE OF MAN
Reading edition
The Latin is actus purus, another scholastic expression to denote the action of the substance, which composes the essence of the body apart from its accidental qualities. For an exposition of the various kinds of motions he contemplates, the reader may refer to the 48th aphorism of the 2d book.—Ed.