Abstract
A study of four contemporary philosophers Naess believes "will take their place side by side in future histories of philosophy": Carnap, Wittgenstein, Heidegger, and Sartre. Although Naess's own philosophy is more in the tradition of Carnap than of the others, this does not affect the quality of his exposition. He attempts to understand each philosopher in his own terms, and his treatment of them is notable for its insight and accuracy. There is no attempt at a systematic comparison of the four, but similarities and differences are noted in the appropriate places. A good example of tolerance in philosophy.—A. E. J.