Get rid of its clutter and save its elite. Later generations quoted "getting rid of the weeds and keeping the seeds" as an idiom. It means to discard mistakes and keep the best.

Among any three people who walk, I will definitely find something to learn. Their excellent qualities should be imitated, and their shortcomings should be avoided.

Abstain from greed, greed leads to no quality; Beware of arrogance, which leads to ignorance; Avoid laziness, laziness makes no progress.