One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man.

Friendship, like credit, is highest when it is not used.

Luck is tenacity of purpose.

Pessimist: One who has been intimately acquainted with an Optimist.

Genius may have its limitations, but stupidity is not thus handicapped.

Men are only as great as they are kind.

The line between failure and success is so fine that we scarcely know when we pass it: so fine that we are often on the line and do not know it.