St. Anselm was born in AD 1033, and earned acclaim early in his life as a gifted preacher. He became abbot of Bec in Normandy in 1078, until 1093, when he was chosen as Archbishop of Canterbury, where he remained until his death in 1109. St. Anselm won acclaim as a theologian, using logic and reason to defend Christianity. He battled for power with King William II, as well as King Henry I, forcing the standard that while the king would choose the bishop, the Church would invest him with the spiritual signs of office.
A prolific writer, St. Anselm authored books that promoted his logical view of his own faith. While at Bec in Normandy, he wrote his Monologium, and a few years later his Proslogium. St. Anselm even offered a mathematical proof of the existence of God! This proof, while complex enough to make you dizzy, nevertheless gives great insight into St. Anselm's character and piety. His most famous work, the Cur Deus Homo?, set forth his belief about the reasons behind the birth of Jesus Christ. St. Anselm is heralded as one of the best theologians of the Middle Ages.