The only foes that threaten America are the enemies at home, and these are ignorance, superstition and incompetence.

The difference in men does not lie in the size of their hands, nor in the perfection of their bodies, but in this one sublime ability of concentration: to throw the weight in one blow, to live eternity in an hour.

Little minds are interested in the extraordinary; great minds in the commonplace.

Do not dump your woes upon people — keep the sad story of your life to yourself. Troubles grow by recounting them.

So long as governments set the example of killing their enemies, private individuals will occasionally kill theirs.

The wise way to benefit humanity is to attend to your own affairs, and thus give other people an opportunity to look after theirs.

It is the weak man who urges compromise - never the strong man.