"Don't do it for the small good, don't do it for the small evil" is Liu Bei's famous saying, don't do it for the small good, and don't do it for the small evil.

This is what Liu Bei said in his last testament to his son Liu Chan. The original sentence reads: "Don't do little evil, don't do little good. Only virtue and virtue can serve people. "

It means: don't do it just because it is a minor bad thing, and don't stop doing it just because it is a minor good thing.

Serving people with virtue is to exercise people's admiration with virtue. Although Liu Bei has a slight deficiency in the power of machines, he has noble moral sentiments. And use it to influence his assassin. Before he died, Liu Bei also used it to educate his son Liu Chan, that is, "Don't do it with small evil, don't do it with small good" and "only serve people with virtue".