It is only the very wisest and the very stupidest who never change.

It is the obligation of the ruler to continually renew himself in order to renew the people by his example.

What the wise seek is in themselves

The man who moves a mountain begins by carrying away small stones.

How great is the path proper to the Sage! Like overflowing water, it sends forth and nourishes all things, and rises up to the height of heaven. All-complete is its greatness! It embraces the three hundred rules of ceremony, and the three thousand rules of demeanor. It waits for the proper man, and then it is trodden. Hence it is said, 'Only by perfect virtue can the perfect path, in all its courses, be made a fact.'

When you see a good person, think of becoming like her/him. When you see someone not so good, reflect on your own weak points.

Shall I tell you what knowledge is? It is to know both what one knows and what one does not know.