Self-sacrifice? But it is precisely the self that cannot and must not be sacrificed.
The evil of the world is made possible by nothing but the sanction you give it.
The difference between animals and humans is that animals change themselves for the environment, but humans change the environment for themselves.
The more you learn, the more you know that you know nothing.
Every period ruled by mystics was an era of stagnation and want, when most men were on strike against existence.
The mark of an honest man... is that he means what he says and knows what he means.