In the daily lives of most men and women, fear plays a greater part than hope: they are more filled with the thought of the possessions that others may take from them, than of the joy that they might create in their own lives and in the lives with which they come in contact. It is not so that life should be lived.

A world full of happiness is not beyond human power to create; the obstacles imposed by inanimate nature are not insuperable. The real obstacles lie in the heart of man, and the cure for these is a firm hope, informed and fortified by thought.

To realize the unimportance of time is the gate to wisdom.

Some people would rather die than think.

Beggars do not envy millionaires, though of course they will envy other beggars who are more successful.

Not to be absolutely certain is, I think, one of the essential things in rationality.

If the West can claim superiority in anything, it is . . . in science and scientific technique.