It requires wisdom to understand wisdom: the music is nothing if the audience is deaf.

A man who has humility will have acquired in the last reaches of his beliefs the saving doubt of his own certainty.

It is all very well to talk about being the captain of your soul. It is hard, and only a few heroes, saints, and geniuses have been the captains of their souls for any extended period of their lives.

Happiness cannot be the reward of virtue; it must be the intelligible consequence of it.

And the principle which distinguishes democracy from all other forms of government is that in a democracy the opposition not only is tolerated as constitutional but must be maintained because it is in fact indispensable.

The unexamined life, said Socrates, is unfit to be lived by man. This is the virtue of liberty, and the ground on which we may justify our belief in it, that it tolerates error in order to serve truth.

We are quite rich enough to defend ourselves, whatever the cost. We must now learn that we are quite rich enough to educate ourselves as we need to be educated.