good (virtuous) / benevolent / well-disposed / good at sth / to improve or perfect
善
=
业
+
口
+
羊
:
Mnemonic symbol: a good book about etiquette.
Sherlock Holmes (sh) finds a bullfrog (业) and a sheep (羊) fighting viciously over a mandarin (口) in the anthill's bathroom (an4). He finds this behaviour unbearable and starts to read Emily Post to them to teach them some manners (善).