Work is of two kinds: first, altering the position of matter at or near the earth's surface relative to other matter; second, telling other people to do so.

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

The sentiments of an adult are compounded of a kernel of instinct surrounded by a vast husk of education.

Really high-minded people are indifferent to happiness, especially other people's.

It is only through imagination that men become aware of what the world might be; without it, ‘progress’ would become mechanical and trivial.

Extreme hopes are born of extreme misery, and in such a world hopes could only be irrational.

Most of the greatest evils that man has inflicted upon man have come through people feeling quite certain about something which, in fact, was false.