In the era of Tommas Campanella's existence, it should be very difficult to pursue the socialist system, even the utopian socialist system. At that time, under the rule and exploitation of the Pope, the general public was devastated. The Pope's theism rules the minds of the masses with false idealism and dominates people's consciousness. Faced with the oppression of the Pope, many people suffocated. It is in this situation that Tommas Campanella bravely fought against the government in pursuit of his so-called truth. Although the utopian social system he pursues is only an illusion, he believes it will come true sooner or later. As long as he sticks to his point of view and dares to sacrifice for it, this system will definitely break through the darkness and make people's lives as bright and beautiful as sunshine. He has also been detained many times and his life has been threatened many times. Not only did he not give up his thoughts, but he also wrote the famous work Sun City with his perseverance. In this work, the happiness of future life is described. The people live a life of food and clothing, live in a big house like a palace, and the rulers serve the masses. His pursuit shows us the beauty of the society he pursues. Although the social system he pursues is quite perfect, in fact, even the capitalist society can't reach this level. What he pursues can only be an illusory social system. He waged an indomitable struggle with the dark forces with his life, showing us the greatness and persistence of an anti-black warrior's moral character.