A gentleman is harmonious but different, and a villain is not harmonious.
A gentleman is Thai but not arrogant, and a villain is arrogant but not Thai.
Gentlemen and villains have different interests, only public and private.
Gentlemen and villains, like ice and charcoal, are incompatible.
Gentleman is as lovely as spring breeze; Little people are like wine, but they need to be scalded for a while.
You can't judge whether it is a gentleman just for a moment's fame; You can't slander him for a while and call him a villain.
Demanding gentlemen, forgiving villains and thinking that they are observant are actually helping villains to open their eyes.