386 years ago today, on May 21, 1639 (April 19, 1639, the Italian philosopher Campanella passed away. Campanella (1568~1639) was a utopian socialist, philosopher, and writer during the Italian Renaissance. Born in southern Italy on September 5, 1568, and died on May 21, 1639 in Paris, France. Joined the Order of Dominica in 1582. From 1591 to 1597, he was arrested three times for publishing anti-religious works and imprisoned for six years. Released in December 1597. After being ordered to return to his hometown, he was arrested by the Spanish authorities in September 1599 and spent 27 years in prison for participating in leading the people of southern Italy in their struggle against the Habsburgs in Spain. After his release in July 1628, he continued to participate in organizing the anti-Spanish uprising of the people of his hometown, but unfortunately failed due to the traitor's whistleblower. He fled to France in October 1634. The book "Sun City" written by Campanella in prison in 1622 is a work on utopian socialism with far-reaching influence. In his book, he adopts a dialogue style to depict a new ideal society that was fundamentally different from the societies of Western European countries at that time. In this society, there is no exploitation and no private property; everyone works and products are distributed according to demand;"political philosophers" are implemented in Sun City, and only "sages" with great wisdom and wisdom can serve as the top managers (called the sun) and their assistants; Education is linked to production, and there is a difference between mental labor and physical labor. This idea had a certain influence on later utopian socialists. His books include "On the Best Country","Philosophy of the Senses","On the Kingdom of Christ","Theology","Poetry" and "Metaphysics".