Philip C. Ritterbush

<i>The Difference of Man and the Difference It Makes</i> . Mortimer J. Adler. Holt, Rinehart and Winston, New York, 1967. xvi + 395 pp. $7.95. Based on the Encyclopaedia Britannica Lectures, Chicago, 1966.; <i>Robots, Men and Minds</i> . Psychology in the Modern World. Ludwig von Bertalanffy. Braziller, New York, 1967. x + 150 pp. $5. Based on the Heinz Werner Inaugural Lectures, Clark University, 1966.