Calumny is only the noise of madmen.
It was a favorite expression of Theophrastus that time was the most valuable thing that a man could spend.
Democritus says, "But we know nothing really; for truth lies deep down".
Man is the most intelligent of the animals - and the most silly.
The art of being a slave is to rule one's master.
You will become a teacher of yourself when for the same things that you blame others, you also blame yourself.