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

In Socrates' thought the two marks of individual self-consciousness appear; it is practical and it is social.

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

Psychology more than any other science has had its pseudo-scientific no less than its scientific period.

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 reason of the close concurrence between the individuals progress and that of the race appears, therefore, when we remember the dependence of each upon the other.