An act has no ethical quality whatever unless it be chosen out of several all equally possible.

'Pure experience' is the name I gave to the immediate flux of life which furnishes the material to our later reflection with its conceptual categories.

A genius is the man in whom you are least likely to find the power of attending to anything insipid or distasteful in itself. He breaks his engagements, leaves his letters unanswered, neglects his family duties incorrigibly, because he is powerless to turn his attention down and back from those more interesting trains of imagery with which his genius constantly occupies his mind.

How can the moribund old man reason back to himself the romance, the mystery, the imminence of great things with which our old earth tingled for him in the days when he was young and well?

I am well aware how odd it must seem to some of you to hear me say that an idea is true so long as to believe it is profitable to our lives

Believe that life is worth living and your belief will help create the fact.

Science herself consults her heart when she lays it down that the infinite ascertainment of fact and correction of false belief are the supreme goods for man.