The contemporary concern of students of man with systematic frames of reference is reflected in Professor Levy's volume. The most influential initiatives in this direction have been taken by Professor Talcott Parsons of Harvard University who built mainly on the foundations laid by Max Weber. Professor Levy is an anthropologist and sociologist who has been greatly inspired by Parsons. A conceptual scheme of the kind set out in the present book is of interest to any psychiatrist who wants to see himself and his patients in the total context of society. The psychiatrist will be especially interested in the chapters dealing with The Structure of Role Differentiation and The Structure of Solidarity.