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

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

Misery is evil; quarreling, a misfortune. There is only one possibility of avoiding both: a clear division of society. [Otherwise] the strong tyrannize the weak, the intelligent frighten the stupid, the inferior resist the superior, and the young mock the old.

Now it is human nature to want to eat to ones fill when hungry, to want to warm up when cold, to want to rest when tired. These all are a part of people's emotional nature.

Human nature is such that people are born with a love of profit If they follow these inclinations, they will struggle and snatch from each other, and inclinations to defer or yield will die.

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.

Man's nature is evil; goodness is the result of conscious activity.