2. Source. From Song Chen's "Agricultural Book": "Anyone who is engaged in affairs should do what he can, and he can't do it, so he is too greedy and will never achieve anything. Pass on the day: if you have less, you will get it, and if you have more, you will be confused. "
3, and the truth of this sentence is: if you choose more opportunities, you will not know what you want; And you have no choice, you can only get what is in front of you. In other words, once a person asks too much, he will be confused. On the contrary, he can concentrate if he asks less.