Psychology more than any other science has had its pseudo-scientific no less than its scientific period.
Plato stands for the union of truth and goodness in the supreme idea of God.
Heredity provides for the modification of its own machinery.
Pythagoras took the next important step by subordinating the mere matter of nature to its essential principle of form and order, identifying the latter with reason or the soul.
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.