You must believe that you can help bring about a better world.

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

A proverb is one man's wit and all men's wisdom.

Next to enjoying ourselves, the next greatest pleasure consists in preventing others from enjoying themselves, or, more generally, in the acquisition of power.

The method of "postulating" what we want has many advantages; they are the same as the advantages of theft over honest toil.

I cannot escape from the conclusion that the great ages of progress have depended upon a small number of individuals of transcendent ability.

Animal rights, taken to their logical conclusion, mean votes for oysters.