The famous saying of being a confident person is, An upright man is open and poised while a petty man is anxious and worried., which is the most basic truth of being a person. It shows that people can live comfortably every day because they don't do anything wrong and have no other ghosts in their hearts.

There's another thing. Being an upright person, even if someone framed her and framed her, but he didn't do anything bad, shows that he has nothing to be afraid of, because he is an upright person.

Then there is the reason to travel all over the world, and it is difficult to move without reason, which shows that a person must do rational things in the world, not unreasonable things, and do unreasonable things like rats crossing the street, so people can't do bad things in this world, but must do rational things, so that they can survive forever in this society.