"philosophical essays on freud" includes an introduction from james hopkins and selections from the philosophers ludwig wittgenstein, clark glymour, adam morton, stuart hampshire, david sachs, brian o'shaughnessy, richard wollheim, ronald de sousa, patrick suppes, jean-paul sartre, herbert fingarette, thomas nagel, irving thalberg, david pears, and donald davidson, as well from b. r. cosin and w. d. hart. some of the selections are reprints from "freud: a collection of critical essays" (1974), a work edited by wollheim. the selection from wittgenstein is reprinted from "wittgenstein: lectures and conversations" (1966), edited by cyril barrett.