When you say what you want, you know what you mean by doing what you want.

Know, know "wisdom", and be wise to protect yourself. It is wise to speak to the point, and it is benevolent to act according to the rules.

Source: "Xunzi Zidao": "So a gentleman knows what he knows, but he doesn't know what he doesn't know, but speaks; You can say you can, you can't say you can't, you can. If you want to speak, you will know, and if you go, you will be benevolent; Kindness alone is not enough, knowing that your husband is evil! "

Appreciation: Pay attention to words and deeds, and don't exaggerate your knowledge and skills. To use modern expression means to have a modest learning attitude.