At the beginning of Ares 3, there is a saying that "the measure of a person is what he does when he has power". What is the moral of the game?

This sentence also appears in Notorious 1, with the same sentence and different translations. I remember what Lincoln said, which means that a person's true side will often be revealed through his behavior when he gains enough power and status. I looked it up later. Plato said it. When a person is humble, he may not be able to show his true side for one reason or another, but when he is no longer afraid, he exposes his true side.