Abstract
Erik Ostenfeld's hundred-page book, of which only seventy-one are text, would likely have been several times as long if it had been written by a good many other contemporary philosophers. It is refreshingly concise, clear, and well argued, and his delineation of Plato's doctrine especially in the later dialogues as well as Aristotle's in the De Anima is detailed and careful beyond what one finds in most recent authors on these subjects. He argues persuasively for a similarity of teaching in the later Platonic dialogues and in Aristotle. Other Greek philosophers are treated only in passing.