Social evolution is a resultant of the interaction of two wholly distinct factors: the individual ... bearing all the power of initiative and origination in his hands; and, second, the social environment with its power of adopting or rejecting both him and his gifts. Both factors are essential to change. The community stagnates without the impulse of the individual. The impulse dies away without the sympathy of the community.

I wished by treating Psychology like a natural science, to help her become one.

We do not sing because we are happy, we are happy because we sing.

No one sees further into a generalization than his own knowledge of detail extends.

From a pragmatic point of view, the difference between living against a background of foreigness (an indifferent Universe) and one of intimacy (a benevolent Universe) means the difference between a general habit of wariness and one of trust.

Time itself comes in drops.

Few people have definitely articulated philosophies of their own. But almost everyone has his own peculiar sense of a certain total character in the universe, and of the inadequacy of fully to match it [to] the peculiar systems that he knows.