McNeill (philosophy, DePaul U.) explores the phenomenon of the Augenblick, or "glance of the eye," in Heidegger's thought, and in particular its relation to the primacy of seeing and of theoretical apprehending both in Aristotle and in the philosophical and scientific tradition of Western thought. He argues that Heidegger's early reading of Aristotle, which identifies the experience of the Augenblick at the heart of ethical and practical knowledge, was a decisive encounter for Heidegger's subsequent understanding and critique of the history of philosophy, science, and technology. Annotation c. by Book News, Inc., Portland, Or.