A history of Greek Philosophy Vol. 4, Plato: The Man and His Dialogues. Earlier Period Vol. 5, The Later Plato and the Academy W. K. C. Guthrie Cambridge: Cambridge University Press, 1975, 1978. Vol. 4, pp. xviii, 603; Vol. 5, pp. xvi, 539Plato: The Written and Unwritten Doctrines J. N. Findlay International Library of Philosophy and Scientific Method London: Routledge & Kegan Paul et New York: Humanities Press, 1974. Pp. 484