Your children are not your children. They are the sons and daughters of Life's longing for itself.

We cannot live better than in seeking to become better.

If I get married, I want to be very married.

Live as if you were living a second time, and as though you had acted wrongly the first time.

Life is like playing a violin solo in public and learning the instrument as one goes on.

The historian looks backward. In the end he also believes backward.

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

Each man should frame life so that at some future hour fact and his dreaming meet.

Have no fear of perfection - you'll never reach it.

History repeats itself, first as tragedy, second as farce.

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.

Each life makes its own immitation of immortality.

The present is theirs; the future, for which I really worked, is mine.

Nothing exists except atoms and empty space; everything else is opinion.

Life is like music, it must be composed by ear, feeling and instinct, not by rule.

I have learned to seek my happiness by limiting my desires, rather than in attempting to satisfy them.

One of the saddest things in life, is the things one remembers.

Anyone who lives within their means suffers from a lack of imagination.

Life is either a daring adventure or nothing. Security is mostly a superstition. It does not exist in nature.

Old minds are like old horses; you must exercise them if you wish to keep them in working order.

The most important thing to do if you find yourself in a hole is to stop digging.