The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others.

As men begin to grow civilized, they cease to be satisfied with mere taboos.

The question of "unreality"is a very important one. Misled by grammar, the great majority of those logicians who have dealt with this question have dealt with it on mistaken lines. They have regarded grammatical form as a surer guide in analysis than, in fact, it is. And they have not known what differences in grammatical form are important.

The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. If you take your children for a picnic on a doubtful day, they will demand a dogmatic answer as to whether it will be fine or wet, and be disappointed in you when you cannot be sure.

There was, I think, never any reason to believe in any innate superiority of the male, except his superior muscle.

There are certain things that our age needs. It needs, above all, courageous hope and the impulse to creativeness.

Science has made unrestricted national sovereignty incompatible with human survival. The only possibilities are now world government or death.