Millions of items in the outward order are present to my senses which never properly enter into my experience. Why? Because they have no interest for me. My experience is what I agree to attend to. Only those items which I notice shape my mind --without selective interest, experience is an utter chaos.

Faith means belief in something concerning which doubt is still theoretically possible ... faith is the readiness to act in a cause the prosperous issue of which is not certified to us in advance.

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

The essence of genius is to know what to overlook.

A great many people think they are thinking when they are merely rearranging their prejudices.

It is only in the lonely emergencies of life that our creed is tested: then routine maxims fail, and we fall back on our gods.

Theory must mediate between all previous truths and certain new experiences