Life is like a library owned by the author. In it are a few books which he wrote himself, but most of them were written for him.

We must all obey the great law of change. It is the most powerful law of nature.

What would life be if we had no courage to attempt anything?

The more sand that has escaped from the hourglass of our life, the clearer we should see through it.

All good things which exist are the fruits of originality.

Your purpose in life is to find your purpose and give your whole heart and soul to it.

A lie told often enough becomes the truth.

This terrifying world is not devoid of charms, of the mornings that make waking up worthwhile.

All that is not eternal is eternally out of date.

Humility is really important because it keeps you fresh and new.

In the depth of winter, I finally learned that within me there lay an invincible summer.

Every life has a measure of sorrow, and sometimes this is what awakens us.

Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.

Until you value yourself, you won't value your time. Until you value your time, you will not do anything with it.

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

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

The nicest thing for me is sleep, then at least I can dream.

Life is a disease, brother, and death begins already at birth. Every breath, every heartbeat, is a moment of dying - a little shove toward the end.

How people treat you is their karma; how you react is yours.

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

Doubt must be no more than vigilance, otherwise it can become dangerous.