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

The word 'cause' is an altar to an unknown god.

Pragmatism asks its usual question. "Grant an idea or belief to be true," it says, "what concrete difference will its being true make in anyone's actual life? How will the truth be realized? What experiences will be different from those which would obtain if the belief were false? What, in short, is the truth's cash-value in experiential terms?

I am no lover of disorder and doubt as such. Rather do I fear to lose truth by this pretension to possess it already wholly.

If merely 'feeling good' could decide, drunkenness would be the supremely valid human experience.

I originally studied medicine in order to be a physiologist, but I drifted into psychology and philosophy from a sort of fatality. I never had any philosophic instruction, the first lecture on psychology I ever heard being the first I ever gave.

Let everything you do be done as if it makes a difference.