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

When a man knows he is to be hanged in a fortnight, it concentrates his mind wonderfully..

Courage is the greatest of all virtues, because if you haven't courage, you may not have an opportunity to use any of the others..

My dear friend, clear your mind of can't..

Language is the dress of thought; every time you talk your mind is on parade..

Curiosity is one of the most permanent and certain characteristics of a vigorous intellect..

Life affords no higher pleasure than that of surmounting difficulties..

He who has so little knowledge of human nature as to seek happiness by changing anything but his own disposition will waste his life in fruitless eff….

You can never be wise unless you love reading..

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 s….

Power is not sufficient evidence of truth..

There are two types of knowledge. One is knowing a thing. The other is knowing where to find it..

Patriotism is the last refuge of the scoundrel..

Prejudice is a great time-saver. You can form opinions without having to get the facts. Prejudice not being founded on reason cannot be removed by ar….

Never trust your tongue when your heart is bitter..

What we hope ever to do with ease, we must learn first to do with diligence..

To preserve health is a moral and religious duty: for health is the basis of all social virtues; and we can be useful no longer than while we are wel….

Whoever thinks of going to bed before twelve o'clock is a scoundrel..

None but a fool worries about things he cannot influence..

Nature has given women so much power that the law has very wisely given them little..

Fraud and falsehood only dread examination. Truth invites it..