Woe to him who teaches men faster than they can learn.

And last are the few whose delight is in meditation and understanding; who yearn not for goods, nor for victory, but for knowledge; who leave both market and battlefield to lose themselves in the quiet clarity of secluded thought; whose will is a light rather than a fire, whose haven is not power but truth: these are the men of wisdom, who stand aside unused by the world.

Forget mistakes. Forget failure. Forget everything except what you're going to do now and do it. Today is your lucky day

The individual succumbs, but he does not die if he has left something to mankind.

There is hardly an absurdity of the past that cannot be found flourishing somewhere in the present.

Progress is the increasing control of the environment by life.

The most interesting thing in the world is another human being who wonders, suffers and raises the questions that have bothered him to the last day of his life, knowing he will never get the answers.