When superiors are fond of showing their humanity, inferiors try to outstrip one another in their practice of it.
Real knowledge is to know the extent of one's ignorance.
If you know, say you know. If you don't know, say you don't know.
The man who is master of himself drinks gravely and wisely.
He is the truly courageous man who never desponds.
How should I know anything about another world when I know so little of this?