Saint Anselm was an Italian Benedictine monk, philosopher, and theologian who lived from 1033 to 1109. He is best known for his work in the field of scholasticism and for formulating the famous ontological argument for the existence of God. Anselm served as the Archbishop of Canterbury and played a significant role in the development of medieval thought. Anselm's writings, including "Proslogion" and "Monologion," emphasize faith seeking understanding. He believed that human reason could help explain and support religious beliefs. His ideas influenced later thinkers, including Thomas Aquinas and the broader tradition of Christian philosophy.