Tianzi is very smart and likes to learn.

Reviewing the past helps to understand the present.

Don't be ashamed to learn from your subordinates.

If three people walk together, one of them must be qualified to be my teacher.

There is still a long way to go.

Choose and follow the good things.

Isn't this a pleasure?

Imitate those who are better than themselves.

Idioms in Mencius

Be content with your wealth and status.

Excessive enthusiasm will spoil things.

Trying to put out a car full of burning firewood with a glass of water-it's not enough at all.

Things are different now; Environmental change cases; Times have changed; Different times, different actions.

The only path/way

There are too many idioms derived from the works of these two great sages to talk about. If you really want to know everything, go and see their works.