Love, children, and work, are the great sources of fertilizing contact between the individual and the rest of the world.

Every advance in civilization has been denounced as unnatural while it was recent

If all our happiness is bound up entirely in our personal circumstances it is difficult not to demand of life more than it has to give.

Truth is for the gods; from our human point of view, it is an ideal, towards which we can approximate, but which we cannot hope to reach.

Calculus required continuity, and continuity was supposed to require the infinitely little; but nobody could discover what the infinitely little might be.

The sea, the stars, the night wind in waste places, mean more to me than even the human beings I love best.

To expect a personality to survive the disintegration of the brain is like expecting a cricket club to survive when all of its members are dead.