Reason may be a small force, but it is constant, and works always in one direction, while the forces of unreason destroy one another in futile strife.

To conquer fear is the beginning of wisdom.

It is for this reason that rationality is of supreme importance to the well-being of the human species...even more, in those less fortunate times in which it is despised and rejected as the vain dream of men who lack the virility to kill where they cannot agree.

Fundamental happiness depends more than anything else upon what may be called a friendly interest in persons and things.

Nothing is so exhausting as indecision, and nothing is so futile.

The fundamental concept in social science is Power, in the same sense in which Energy is the fundamental concept in physics.

The happiness that is genuinely satisfying is accompanied by the fullest exercise of our faculties and the fullest realization of the world in which we live.