[explanation] describes a cool head and no distractions.

[Source] Tang Bai Juyi's Sacrifice to Assistant Minister Li: "The vast world is different; Teeth are rolling and waves are everywhere. Who is the public, quiet inside; The wind and rain are like rain, and the chickens are like singing. "

If a person has no selfish desire, he can be simple.

"All rivers run into the sea, with great tolerance;

The wall stands a thousand miles, and it is just without desire. It is Lin Zexu's famous saying, in which "no desire is just" means that people are not allowed to have desires, but to restrain their own selfish desires. Restrain your own selfish desires, you can be indifferent; If you control your own selfish desires, you will live forever.