No more fiendish punishment could be devised, were such a thing physically possible, than that one should be turned loose in society and remain absolutely unnoticed.

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

Why should we think upon things that are lovely? Because thinking determines life. It is a common habit to blame life upon the environment. Environment modifies life but does not govern life. The soul is stronger than its surroundings.

It is wrong always, everywhere, and for everyone, to believe anything upon insufficient evidence.

Experience, as we know, has a way of boiling over, and making us correct our present formulas.

Our esteem for facts has not neutralized in us all religiousness. It is itself almost religious. Our scientific temper is devout.

Man lives for science as well as bread.