What does "diligence in thinking, quickness in action, and slowness in speaking" mean?

It means to be diligent in thinking, quick and capable in action, but cautious in speaking. In other words, do more, think more, and talk less.

Source:

The Analects of Confucius and Liren written by Confucius and Lu in the Spring and Autumn Period: "A gentleman wants to be slow in words but quick in deeds."

Translation:< /p>

Confucius said: "A gentleman should be cautious and slow in his words, but quick in his actions.

Extended information:

People's work ability and language ability are often not commensurate with each other. , People who can speak may not necessarily do it, and people who can do it may not be able to speak. It is rare to see people who can both do well and speak beautifully. We have discussed the advantages and disadvantages of people who are good at speaking, and we have put forward the requirements for those who can speak well. People who are good at arguing must "listen to what they say and watch what they do."

Be cautious in speaking so that you don't say everything, leave no room for yourself, speak in a precise and precise manner, and talk less nonsense. , clichés, but don’t be too cautious to say anything. To be quick in action means to be quick to commit to what you have said. Don’t just talk about it, but do more practical work.

Reference: Baidu Encyclopedia - The Analects of Confucius · Li Ren Chapter