"In philosophy," the author writes in his preface, "we have learned to get our satisfaction from showing that the other fellow is mistaken rather than from establishing the truth of our own positive tenets." The impeccably professional work of a mature and distinguished logician and scholar, Skeptical Essays propounds the view that the principal traditional problems of philosophy are genuine intellectual knots; they are intelligible enough, but at the same time the are absolutely insoluble.

The problems Mates discusses are: the Liar paradox and Russell's Antinomy of the class of all nonself-membered classes; the problem of determinism and moral responsibility; and the existence of the external world. Clearly written and effectively organized, the book will be an excellent text for advanced students.