During the five years of this book's making, I was privileged to hear some sections of it presented to the Imago group (London). Stimulating as it was in bits, it becomes impressive and valuable as an integrated work which contributes a long-needed implementation of psycho-analytic insight into mental functioning with specific reference to man's (currently) most impressive activity, science.

Dr Hutten, whose beginnings in the physical and mathematical sciences carried him later into philosophy, has acquired an impressive understanding of psycho-analytic theory and