The satisfaction to be derived from success in a great constructive enterprise is one of the most massive that life has to offer.

At first it seems obvious, but the more you think about it the stranger the deductions from this axiom seem to become; in the end you cease to understand what is meant by it.

Unrestricted nationalism is, in the long run, incompatible with world peace.

Humanistic ethics is based on the principle that only humans themselves can determine the criterion for virtue and not an authority transcending us.

The first essential character [of civilization], I should say, is forethought. This, indeed, is what mainly distinguishes men from brutes and adults from children.

While economics is about how people make choice, sociology is about how they don't have any choice to make.

It is obviously possible that what we call waking life may only be an unusual and persistent nightmare.