Human nature is evil, and goodness is caused by intentional activity.

Tell me and I forget. Teach me and I remember. Involve me and I learn.

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.

A person is born with feelings of envy and hate. If he gives way to them, they will lead him to violence and crime, and any sense of loyalty and good faith will be abandoned.

If what the heart approves conforms to proper patterns, then even if one's desires are many, what harm would they be to good order?

Music is a fantastic peacekeeper of the world, it is integral to harmony, and it is a required fundamental of human emotion.

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