Books, like friends, should be few and well-chosen.

The true measure of a man is how he treats someone who can do him absolutely no good.

Every man who attacks my belief diminishes in some degree my confidence in it and therefore makes me uneasy, and I am angry with him who makes me uneasy.

If your determination is fixed I do not counsel you to despair. Few things are impossible to diligence and skill. Great works are performed, not by strength, but perseverance.