Some mathematician said that pleasure lies not in discovering the truth but in searching for it.

All art has this characteristic-it unites people.

Happiness consists in always aspiring perfection, the pause in any level in perfection is the pause of happiness

Can it be that I have overlooked something, that there is something which I have failed to understand? Is it not possible that this state of despair is common to everyone?

Can it be that I have not lived as one ought?" suddenly came into his head. "But how not so, when I've done everything as it should be done?

Better to know a few things which are good and necessary than many things which are useless and mediocre

For if we allow that human life is always guided by reason, we destroy the premise that life is possible at all.