1925. Boodin, philosopher and academic, wrote a series of works (including this volume) which carried to successful completion the construction of a theory of the nature of man and the world-a theory oriented upon twentieth-century science, empirical rather than wishfully speculative in determining the facts, but emphasizing those dimensions of things and the wholeness of things which our age of specialization has neglected or ignored. These works include Time and Reality; Truth and Reality; A Realistic Universe; Cosmic Evolution; God and Creation, in two volumes: Three Interpretations of the Universe and God; The Social Mind; and The Religion of Tomorrow. The chief significance of these works and of articles too numerous to mention is Boodin's sustained and masterful effort to preserve the long tradition of philosophical idealism from Plato to Royce, within the framework and the materials of our contemporary science.