Secrecy has many advantages, for when you tell someone the purpose of any object right away, they often think there is nothing to it.
Originality provokes originality.
He who does not know foreign languages does not know anything about his own.
Be above it! Make the world serve your purpose, but do not serve it.
I make presents to the mother but think of the daughter.
One never goes further than when they do not know where they are going.