"Salvation" is actually a very heavy word. What does "salvation" mean? It means that you must look at things from a world perspective and with absolute rationality, without any personal emotions. You must bear moral sin because that is necessary for salvation. If you want to save a person or a group, you need kindness, then to save the world, you need pure reason. The price paid for pure rationality is very heavy. If a person insists on justice, then he will get positive feedback from others. If a person insists on evil, then he will get positive feedback from himself. But if you insist on rationality, you will get nothing. Instead, you have to overcome morality. "Salvation" belongs to those who still make choices and move forward despite pressure, pain, and despair. It means that you must give up everything about you, give up the past, present, future, give up good and evil, give up your life for the world, and give up the life you love. From now on, you can only "save the world". To give a simple example, from the perspective of the world, the existence of human beings is only temporary, but the existence of human beings is absolute and eternal. There is a 10,000-fold difference in number between 10,000 people and 100 million people, but after 10,000 years, this gap will be minimal. In other words, no matter how much you sacrifice to gain success, it is worth it. Choosing an uncertain future is exactly betting on humanity. Just like the tram problem, the choice to "save the world" is to choose the side that sacrifices less, rather than believing in a miracle. This miracle is precisely based on the sacrifice of more people. But the heaviness of "salvation" lies in this. Choosing to change the track of the tram means having to bear the weight of this choice. All sins are yours alone. This is "salvation" to save the world, there is no other way."