The intellectual traditions of the Greco-Roman world posed grave threats to Christianity and Islam. Greco-Roman traditions taught and emphasized logic and reason and looked to the natural world for answers, while Christianity was based on faith and belief. In a certain sense, Christianity and Islam adopted various philosophies of the Greek world, while severely rejecting others. Overall, we can identify the ways in which Christians like Tertullian or St. Augustine and Muslims like Avicenna approached Greco-Roman learning. We can also infer how they would have responded to Charlemagne's forced conversions and enthusiasm for classical learning. Greco-Roman intellectual traditions threatened the teachings of Christianity and Islam. Greco-Roman traditions revolved around pagan works, seeking knowledge through observation and questioning, as well as operating from logic and reason while working through rhetoric and dialectical argumentation. Philosophical traditions and mentality did not fit Christian and Islamic views and were originally thought to be capable of corrupting young people. Early Christians also believed that Greco-Roman philosophies and methods would lead Christians to doubt the Scriptures and ultimately weaken their own faith. The challenge that some Christians and Muslims faced differently was that of adapting Greco-Roman traditions to the Christian and Muslim faith. He had to follow the teachings and adhere to the demands of the faith, he could not question or even challenge Christian or Muslim teachings, and he had to accept the "dictates" of the Church regarding the existence of God. In particular, he had to accept the faith in creationism, the ultimate mission of Jesus, as well as the purpose of life and death. This challenge turned out to be… middle of paper… he forcefully rejected all Greek values ​​and traditions, he would oppose this educational renaissance, in his belief that it would undermine the Christian faith. In conclusion, history has shown that many Greco-Roman traditions and philosophies have survived the test of time. Although early Christians such as Tertullian denied and denounced integration, thinkers such as Clement of Alexandria and St. Augustine saw the benefits of combining and integrating Greek principles into the Christian faith. The Muslim world, led by Avicenna, proved to have benefited greatly from the works of the ancient Greeks, fueling a “golden age.” Even through Charlemagne's forced conversions to Christianity, Greek thought and philosophies proved constructive during the Carolingian Renaissance, as classical Greek education and understanding helped govern and improve an empire..