Feeling is the consciousness of the resulting conditions - of success, failure, equilibrium, compromise or balance, in this continuous rivalry of ideas.

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

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

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.

Like all science, psychology is knowledge; and like science again, it is knowledge of a definite thing, the mind.

Heredity provides for the modification of its own machinery.

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