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.

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

Since the nature of people is bad, to become corrected they must be taught by teachers and to be orderly they must acquire ritual and moral principles.

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

Human nature is what Heaven supplies.

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.

I once tried thinking for an entire day, but I found it less valuable than one moment of study.