Ignorant men raise questions that wise men answered a thousand years ago.

One is led astray alike by sympathy and coldness, by praise and by blame

Whoever, in middle age, attempts to realize the wishes and hopes of his early youth, invariably deceives himself. Each ten years of a man's life has its own fortunes, its own hopes, its own desires.

Everyone is deceived in his hopes, cheated in his expectations.

It seems to me that every phenomenon, every fact, itself is the really interesting object. Whoever explains it, or connects it with other events, usually only amuses himself or makes sport of us, as, for instance, the naturalist or historian. But a single action or event is interesting, not because it is explainable, but because it is true.

If you want to reach the infinite, then explore every aspect of the finite.

A purpose you impart is no longer your own.