When things are investigated, then true knowledge is achieved; when true knowledge is achieved, then the will becomes sincere; when the will is sincere, then the heart is set right ; when the heart is set right, then the personal life is cultivated; when the personal life is cultivated, then the family life is regulated; when the family life is regulated, then the national life is orderly; and when the national life is orderly, then there is peace in this world.

Wisdom, compassion, and courage are the three universally recognized moral qualities of men.

If I am walking with two other men, each of them will serve as my teacher. I will pick out the good points of the one and imitate them, and the bad points of the other and correct them in myself.

If you don't know how to serve men, why worry about serving the gods?

The Way is not for, but from, man; if we take the Way as something superhuman, beyond man, this is not the real Way.

The only people who cannot change are the most wise and the most stupid.

It is when those who are not strong enough have made some moderate amount of progress that they fail and give up.