In the Middle Ages, what was called "free art" was the free art in classical Greek and Roman culture, including philosophy, poetry, drama, music, mathematics and natural science. Art is regarded as the source of free thought and is not controlled by the church and the monarch, so it is called "free art". In the Middle Ages, the art of freedom was widely spread, and became a part of European culture in the Middle Ages, and was revived and developed in the Renaissance. In the Middle Ages, the art of freedom also became the core content of medieval university education, which made important contributions to the development of culture and thought in medieval Europe.