The ultimate test of what a truth means is the conduct it dictates or inspires.

A sense of humor is just common sense dancing.

Thoughts become perception, perception becomes reality. Alter your thoughts, alter your reality.

Good-humor is a philosophic state of mind; it seems to say to Nature that we take her no more seriously than she takes us. I maintain that one should always talk of philosophy with a smile.

The emotions aren't always immediately subject to reason, but they are always immediately subject to action.

Our volitional habits depend, then, first, on what the stock of ideas is which we have; and, second, on the habitual coupling of the several ideas with action or inaction respectively.

The question of free will is insoluble on strictly psychological grounds.