Socrates: This man, on one hand, believes that he knows something, while not knowing [anything]. On the other hand, I – equally ignorant – do not believe [that I know anything].
Necessity, who is the mother of our invention.
Courage is a kind of salvation.
Each man is capable of doing one thing well. If he attempts several, he will fail to achieve distinction in any.
Love - a grave mental disease.
We ought to fly away from earth to heaven as quickly as we can; and to fly away is to become like God, as far as this is possible; and to become like him is to become holy, just, and wise.