The dualism itself becomes a sort of presupposition or datum; its terms condition the further problem.

All along we find that social life - religion, politics, art - reflects the stages reached in the development of the knowledge of self; it shows the social uses made of this knowledge.

Plato stands for the union of truth and goodness in the supreme idea of God.

The development of the meaning attaching to the personal self, the conscious being, is the subject matter of the history of psychology.

The fact that tradition hinders the individual savage from thinking logically by no means proves that he cannot think logically.

The prehistorical and primitive period represents the true infancy of the mind.

Heredity provides for the modification of its own machinery.