Treats, in retrospect and prospect, dominant themes and main currents in twentieth century philosophy, such as the European sources of Anglo-American philosophy, Continental philosophy in America, and German and French Existentialism. Special attention is directed toward Heidegger, Jaspers, Sartre, Merleau-Ponty, and their crucial ideas. Originally published in 1976 by the University of California Press. Co-published by arrangement with the Center for Advanced Research in Phenomenology.