If the blood humor is too strong and robust, calm it with balance and harmony.

Those whose character is mean and vicious will rouse others to animosity against them.

The rigid cause themselves to be broken; the pliable cause themselves to be bound.

Therefore, a person should first be changed by a teacher's instructions, and guided by principles of ritual. Only then can he observe the rules of courtesy and humility, obey the conventions and rules of society, and achieve order.

Quarreling over food and drink, having neither scruples nor shame, not knowing right from wrong, not trying to avoid death or injury, not fearful of greater strength or of greater numbers, greedily aware only of food and drink - such is the bravery of the dog and boar.

The nature of man is evil; what is good in him is artificial.

Men of all social stations live together: they are equal in their desires, yet vary in their methods; they are equal in their passions, yet different in their intelligence; that is their nature-given vitality.