THE FOUR KINDS OF MEN.
He who knows not and knows not he knows not. He is foolish. Shun him.
He who knows not and knows he knows not. He is simple, Teach him.
He who knows and knows not he knows. He is asleep. Wake him. He is
He who knows and knows he knows. He is wise. Follow him. -Selected.
It is a wise man who can keep his temper; any fool can lose it.