Flatterers never think highly enough of themselves or others. French writer La Bruyère

Don’t let the bad detract from the good.

See "Linchuan Collected Works" by Wang Anshi of Song Dynasty. Waste: negate. The main idea of ??this sentence is: Don't use his bad behavior to deny his good behavior. This sentence clearly states that one should evaluate people's words and deeds from a two-part perspective. Good is good, bad is bad. You can't use good to discard bad things, and you can't use bad things to discard good things. Only by seeking truth from facts and making a comprehensive analysis can we understand a person correctly. It can be used to criticize those practices that attack one point but are not as good as the rest.

Northern Song Dynasty politician and writer Wang Anshi "Linchuan Collected Works"