THE TRAITOR (304 pp.)André Gorz Simon & Schuster ($4.50).
To the many hazards of autobiography.
André Gorz, French by adoption but a birthright existentialist, has added something new. Austrian-born Author Gorz is not quite sure that he exists. He thus commits himself to a gaseous and perhaps nonexistent subject matter. Nonetheless, this enterprise has set the eyeballs of Existentialist Jean-Paul Sartre rolling in a fine frenzy, resulting in 36 pages of introduction, "an honor accorded few books," as the publishers reverently announce. Sample honor: "This hoarse, muffled voice, this breaking voice will live in your ears." Readers who like philosophical teasers will be...