When people lack teachers, their tendencies are not corrected; when they do not have ritual and moral principles, then their lawlessness is not controlled.

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

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

The person attempting to travel two roads at once will get nowhere.

If there is no dull and determined effort, there will be no brilliant achievement.

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.

Mencius said that human nature is good. I disagree with that.