Saint Augustine was a prominent early Christian theologian and philosopher, born in 354 AD in Thagaste, North Africa. He is best known for his influential works, including Confessions and The City of God, which explore themes of faith, grace, and the nature of God. Augustine's thoughts helped shape Western Christianity and philosophy. He became the Bishop of Hippo in 396 AD and played a crucial role in the development of Christian doctrine. His ideas on original sin and the nature of the Church have had a lasting impact on both Catholicism and Protestantism. Augustine is celebrated as a saint in many Christian traditions.