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

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

If the impulse to daring and bravery is too fierce and violent, stay it with guidance and instruction.

Thus, anybody who follows this nature and gives way its states will be led into quarrels and conflicts, and go against the conventions and rules of society, and will end up a criminal.

One must remember equality, yet also be aware of difference, for if the people are allowed to act as it pleases them without coming up against displeasure, if one gives rein to its desires without setting [any] limit, it becomes confused and can no longer take delight in anything.

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.

There are successful scholars, public-spirited scholars, upright scholars, cautious scholars, and those who are merely petty men.