The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

No man is liberated from fear who dare not see his place in the world as it is; no man can achieve the greatness of which he is capable until he has allowed himself to see his own littleness.

There will still be things that machines cannot do. They will not produce great art or great literature or great philosophy; they will not be able to discover the secret springs of happiness in the human heart; they will know nothing of love and friendship.

Unhappy business men, I am convinced, would increase their happiness more by walking six miles every day than by any conceivable change of philosophy.

In considering irregular appearances, there are certain very natural mistakes which must be avoided.

Beware the man of the single book

Reason is a harmonising, controlling force rather than a creative one.