Amnesty is as good for those who give it as for those who receive it. It has the admirable quality of bestowing mercy on both sides.

The knowledge of oneself will preserve that person from vanity.

The natural world is the greatest source of excitement. The greatest source of visual beauty. It is the greatest source of so much in life that makes life worth living.

Time is really the only capital that any human being has and the thing that he can least afford to waste or lose

Everything existing in the universe is the fruit of chance and necessity.

Live your life and forget your age.

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

Maybe this world is another planet?s hell.

Everything passes. Nobody gets anything for keeps. And that's how we've got to live.

Whether I shall turn out to be the hero of my own life, or whether that station will be held by anybody else, these pages must show.

But I don't want comfort. I want God, I want poetry, I want real danger, I want freedom, I want goodness. I want sin.

To forget is the secret of eternal youth. One grows old only through memory. There's much too little forgetting.

People can tell you to keep your mouth shut, but that doesn't stop you from having your own opinion

The earth is like a spaceship that didn't come with an operating manual.

One day, in retrospect, the years of struggle will strike you as the most beautiful.

I am not young enough to know everything.

We must be willing to fail and to appreciate the truth that often 'Life is not a problem to be solved, but a mystery to be lived.'

In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed

There is also this benefit in brag: that the speaker is unconsciously expressing his own ideal. Humor him by all means, draw it all out, and hold him to it.

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

Life should be great rather than long.