The intellectual life of man consists almost wholly in his substitution of conceptual order for the perceptual order in which his experience originally comes.

Instinct leads, logic does but follow.

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.

The first thing that intellect does with an object is to class it with something else.

Organization and method mean much, but contagious human characters mean more in a university.

If it works, it's true.

I am only a philosopher, and there is only one thing that a philosopher can be relied on to do, and that is, to contradict other philosophers.