To do what is impossible for talent is the mark of genius.
The only substance properly so called is the soul.
The laws of animality govern almost the whole of history.
We only understand that which already is within us.
Man never knows what he wants; he aspires to penetrate mysteries and as soon as he has, wants to re-establish them. Ignorance irritates him and knowledge cloys.
It is dangerous to abandon one's self to the luxury of grief; it deprives one of courage, and even of the wish for recovery.