Saint Augustine (354-430 CE) was a prominent Christian theologian and philosopher. He was widely regarded as one of the most significant figures in the development of Western Christianity. He was born on November 13, 354, in Tagaste, Numidia (modern-day Souk Ahras, Algeria). Augustine was the son of a pagan father, Patricius, and a devout Christian mother, Monica. Augustine's early life was marked by a search for truth and meaning, which led him to explore various philosophies and religions, including Manichaeism. He studied rhetoric in Carthage and later taught in Rome and Milan. His spiritual journey took a decisive turn when he encountered the teachings of Bishop Ambrose of Milan, leading to his conversion to Christianity in 386. He was baptized by Ambrose in 387. After his conversion, Augustine returned to North Africa, where he was ordained a priest and later became the Bishop of Hippo (modern-day Annaba, Algeria) in 396. He held this position until his death on August 28, 430. Augustine's writings, including "Confessions" and "The City of God", have had a profound and lasting impact on Christian theology and Western philosophy. His work addressed various theological and philosophical issues, such as the nature of God, the problem of evil, and the relationship between faith and reason. Augustine's adaptation of classical thought to Christian doctrine created a powerful theological system that influenced medieval and modern Christian thought.