A saint is a person whose occupation is to rule the world. He must know where the chaos comes from before he can manage it. If we don't know where the chaos comes from, we can't manage it. Just like a doctor treating a patient. You must know the root of the disease before you can treat it. If you don't know the root cause, you can't cure it. So controlling chaos is not like this. We must know the root of the chaos before we can control it. If we don't know the root of chaos, we can't manage it. A saint is a person who manages the world by profession, so we must examine the root of chaos.
The author of "Universal Love" is Mozi (468-376 BC), whose name is Di, who was born in Shandong (now Tengzhou, Shandong) and Song (now Shangqiu, Henan) at the end of the Spring and Autumn Period and the beginning of the Warring States Period. He was a famous thinker, educator, scientist, strategist, social activist and founder of Mohism during the Warring States Period.
Mozi founded Mohism, and the book Mozi was handed down from generation to generation.