“A man who knows how little he knows is well, a man who knows how much he knows is sick. If, when you see the symptoms, you can tell, Your cure is quick.A sound man knows that sickness makes him sick and before he catches it his cure is quick.”

“Not-knowing is true knowledge.Presuming to know is a disease.First realize that you are sick;then you can move toward health.”

“The wise man is one who, knows, what he does not know.”

“He who speaks does not know; he who knows does not speak”

“He who knows others is wise; he who knows himself is enlightened.”

“He who knows, does not speak. He who speaks, does not know.”

“He who knows other men is discerning;he who knows himself is intelligent.He who overcomes others is strong;he who overcomes himself is mighty.He who is satisfied with his lot is rich;he who goes on acting with energy has a (firm) will. He who does not fail in the requirements of his position, continues long;he who dies and yet does not perish, has longevity.”