This is a profoundly important book and warrants the closest attention of all those directly concerned with the psychological and social well-being of man. The book is a compendium of raw data collected and classified under special conditions and from special points of view despite the author's implication or perhaps conviction that this study consists of 'data about sex which would represent an accumulation of scientific fact completely divorced from questions of moral value and social custom'. The possibility of excluding these considerations in a systematic way in any interpersonal relationship (the operational method by which these data were obtained) is incredible on both logical and psychological grounds.

Furthermore, the closest attention will be essential if the data are to be incorporated into the moral values and social customs