He analyzes the problem from the perspective of a practical person. Don't talk big words or write empty promises. The speaker has no intention but the listener has intention. When you fail to succeed, people with ulterior motives will criticize you.

To be useful to the public means to talk less and do more, not to be complacent, to make as few enemies as possible, and to be a down-to-earth person. If you talk too much, you will make mistakes...