After a wild philosophical decade which has seen the resuscitation of innate ideas, essences, necessities, and possible worlds, Professor Isaac Levi now dreams the impossible dream of reviving infallibility. With admirable daring, he invokes pragmatism, not only to legitimate the quest for certainty, but to declare it always and everywhere successful. Not, to be sure, in the soul of man, but at any rate in his corpus, at every moment, glows the flame of certain and infallible truth.