The secret of being miserable is to have leisure to bother about whether you are happy or not.

The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man.

The power of accurate observation is commonly called cynicism by those who have not got it.

The man who writes about himself and his own time is the only man who writes about all people and all time.

The longer I live the more I see that I am never wrong about anything, and that all the pains I have so humbly taken to verify my notions have only wasted my time.

The liar's punishment is not in the least that he is not believed but that he cannot believe anyone else.

The fact that a believer is happier than a skeptic is no more to the point than the fact that a drunken man is happier than a sober one.

Self-sacrifice enables us to sacrifice other people without blushing.

Reading made Don Quixote a gentleman. Believing what he read made him mad.

Patriotism is your conviction that this country is superior to all other countries because you were born in it.

One man who has a mind and knows it can always beat ten men haven't and don't.

No man can be a pure specialist without being in the strict sense an idiot.

Martyrdom is the only way in which a man can become famous without ability.

Life does not cease to be funny when people die any more than it ceases to be serious when people laugh.

Lack of money is the root of all evil.

Imagination is the beginning of creation. You imagine what you desire, you will what you imagine and at last you create what you will.

If you cannot get rid of the family skeleton, you may as well make it dance.

If the lesser mind could measure the greater as a footrule can measure a pyramid, there would be finality in universal suffrage. As it is, the political problem remains unsolved.

If history repeats itself, and the unexpected always happens, how incapable must Man be of learning from experience.

If all economists were laid end to end, they would not reach a conclusion.