Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Exceptional claims demand exceptional evidence.

There are two things a person should never be angry at, what they can help, and what they cannot.

I really had a lot of dreams when I was a kid, and I think a great deal of that grew out of the fact that I had a chance to read a lot.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

Life is nothing but a competition to be the criminal rather than the victim.

A lie told often enough becomes the truth.

The way to know life is to love many things.

For life in general, there is but one decree: youth is a blunder, manhood a struggle, old age a regret.

A mother takes twenty years to make a man of her boy, and another woman makes a fool of him in twenty minutes.

Being ignorant is not so much a shame, as being unwilling to learn.

Do not erase the designs the child makes in the soft wax of his inner life.

It's only terrible to have nothing to wait for.

To cherish what remains of the Earth and to foster its renewal is our only legitimate hope of survival.

During the first period of a man's life the greatest danger is not to take the risk.

Life is too short for long-term grudges.

All that happens means something; nothing you do is ever insignificant.

We can never obtain peace in the outer world until we make peace with ourselves.

Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation.

Life shrinks or expands in proportion to one's courage.

Every time I see an adult on a bicycle, I no longer despair for the future of the human race.