Now, there are a very large number of bodily movements, having their source in our nervous system, that do not possess the character of conscious actions.

The task of physiological psychology remains the same in the analysis of ideas that it was in the investigation of sensations: to act as mediator between the neighbouring sciences of physiology and psychology.

There are other sources of psychological knowledge, which become accessible at the very point where the experimental method fails us.

Physiology and psychology cover, between them, the field of vital phenomena; they deal with the facts of life at large, and in particular with the facts of human life.

On the other hand, ethnic psychology must always come to the assistance of individual psychology, when the developmental forms of the complex mental processes are in question.

The materialistic point of view in psychology can claim, at best, only the value of an heuristic hypothesis.

Experimental psychology itself has, it is true, now and again suffered relapse into a metaphysical treatment of its problems.