social milieu.

In the social evolution of the human mind, the deepest desires of the
individual have been often necessarily sacrificed to the needs of the
group. Sometimes they have been unnecessarily sacrificed, since human
intelligence is, unfortunately, not omniscient. Nevertheless, the sum
total of human knowledge has now become great enough so that it is at
least well to pause and take account of its bearing on the age-old
problem of family life, in order that our evolution henceforth may be
guarded by rational control rather than trial and error in so far as is
possible. Such a summarization of our actual knowledge of the biology,
sociology and psychology of the foundations of the family institution
this book aims to present, and if it can at the same time suggest a
starting point for a more rationalized system of social control in this
field, its purpose will have been accomplished.

THE AUTHORS.




CONTENTS

PART I

BY M. M. KNIGHT, PH.D.

THE NEW BIOLOGY AND THE SEX PROBLEM IN SOCIETY

CHAPTER