Dig a well before you are thirsty.

He who asks a question is a fool for five minutes; he who does not ask a questionremains a fool forever.

There is no evil in the atoms, only in men's souls.

Arise, awake and stop not till the goal is reached.

Afanatic is a person who can’t change his mind and won’t change.

The exercise of power is determined by thousands ofinteractions between the world of the powerful and that of the powerless, allthe more so because these worlds are never divided by a sharp line: everyonehas a small part of himself in both.

Don't consideryour reputation and you may do anything you like.

Years wrinkle the face, but to give up enthusiasm wrinkles the soul.

A child is not a vase to be filled, but a fire to be lit.

Hatred does not not cease by hatred; but only by rule; this is the eternal rule.

Knowingthat everything's futile but still fighting, still raging against the dying ofthe light that's what motivates me all the time ... If you hold that sense offutility in your head for too long, it can begin to eat into you. You canstill be aware of it

Man alone contains within himself as many species as exist on earth.