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

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

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.

Sacrifice is a state of mind in which our thoughts turn with longing [toward Heaven, the Ancestors], It is the supreme expression of loyalty, love, and respect.

Pride and excess bring disaster for man.

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.

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