St Anselm of Canterbury
Doctor of the Church, Father of Scholasticism · 1033–1109
St Anselm (1033–1109), Archbishop of Canterbury and Doctor of the Church, is best known for his ontological argument for God’s existence in the Proslogion — the argument that God is “that than which nothing greater can be conceived.” His works also include the Monologion (a meditation on the divine essence) and Cur Deus Homo (on the necessity of the Incarnation).