Doubt is the freedom of thought. Any claim to truth can be doubted.

Only silence is great; all else is weakness.

Just as we descend into our consciences to judge of actions which our minds can not weigh, can we not also search in ourselves for the feeling which gives birth to forms of thought, always vague and cloudy?

A calm despair, without angry convulsions or reproaches directed at heaven, is the essence of wisdom.

I think, then, that man, after having satisfied his first longing for facts, wanted something fuller - some grouping, some adaptation to his capacity and experience, of the links of this vast chain of events which his sight could not take in.

I have a private theory, Sir, that there are no heroes and no monsters in this world. Only children should be allowed to use these words

The existence of the soldier, next to capital punishment, is the most grievous vestige of barbarism which survives among men.