Grammar in the seven arts is to understand the grammar of the Bible; Rhetoric is to train the eloquence of preaching; Logic is to conduct formal reasoning and demonstrate theological propositions in sophistry with heresy; Mathematics is to demonstrate the relevant figures in the Bible; Geometry is to show that the earth is not round, but a flat piece floating on the water, which is helpful for the construction of churches; Astronomy is to show that the earth is the center of the universe and to calculate religious festivals and astrology; Music is used to sing hymns … and so on. In a word, all subjects of culture serve religion and are full of the nature of religious theology. No wonder the church at that time said, "Science is a servant of religion." This kind of culture and education makes it easy for us to imagine how dark people lived in Europe in the early Middle Ages. They don't know that there are other books besides the Bible, and they don't know that there are literature, art and science. They are rude and ignorant, but they sincerely believe in God.