I know many books which have bored their readers, but I know of none which has done real evil.
Where there is friendship, there is our natural soil.
And ask each passenger to tell his story, and if there is one of them all who has not cursed his existence many times, and said to himself over and over again that he was the most miserable of men, I give you permission to throw me head-first into the sea.
The superfluous, a very necessary thing.
There are no sects in geometry.
All men are born with a nose and ten fingers, but no one was born with a knowledge of God.