Cur Deus Homo

Incarnation, Satisfaction, Obedience, Divine Honor, and Cosmic Order.

Cur Deus Homo ("Why God Became Man"), composed by St. Anselm around 1098, is a groundbreaking theological dialogue between Anselm and his pupil Boso that rationally proves, without presupposing Christ's existence, the absolute necessity of the Incarnation for human salvation. It centers on key themes including sin as a profound dishonor to God's universal order, the human incapacity to offer adequate satisfaction due to the infinite offense against divine honor, and Christ's voluntary obedience unto death as the superabundant reparation that restores justice while upholding God's freedom and mercy. The work marks a pivotal epoch in atonement theology, replacing earlier ransom theories with the satisfaction model, profoundly shaping scholastic Christology and Western soteriology by emphasizing reason, obedience, and cosmic order rooted in Anselm's Benedictine heritage.