Knowledge is recognizing what you know and what you don't.

A gentleman considers justice to be essential in everything. He practices it according to the principles of propriety. He brings it forth in modesty and faithfully completes it. This is indeed a gentleman.

When you locate good in yourself, approve of it with determination. When you locate evil in yourself, despise it as something detestable.

There are three marks of a superior man: being virtuous, he is free from anxiety; being wise, he is free from perplexity; being brave, he is free from fear.

Don't use cannon to kill musquito.

Sincerity is that whereby self-completion is effected, and its way is that by which man must direct himself.

When the multitude detests a man, inquiry is necessary; when the multitude likes a man, inquiry is equally necessary.