Because only by standing on the commanding heights of morality can we say that others are immoral. Even if I am wrong, I am virtuous. Can a virtuous person be wrong? I once met a man who used to work in the court and was later sentenced and dismissed for taking bribes. From then on, he began to hate society. His most common method is to stand on the moral high ground, then throw a hat at people casually, and then criticize others around this hat.