Text and essays edited by Malcom Brown: St. Augustine / From On the teacher ; G. W. Leibniz / From Discourse on metaphysics ; Friedrich Nietzsche / From Introduction to the study of the Platonic dialogues ; F. M. Cornford / Anamnesis; Karl Popper / The nature of philosophical problems and their roots in science ; H. -P. Stahl / beginnings of propositional logic in Plato ; Malcolm Brown / Plato disapproves of the slave-boy's answer ; Gilbert Ryle / Teaching and training ; Martin Andic / Inquiry and virtue in the Meno.