Augustine of Hippo shaped Western Christianity more than any other thinker after Paul, and Peter Brown's biography has been the standard account since its publication in 1967. This updated edition includes an epilogue reflecting on newly discovered letters and sermons that emerged after the original publication, casting fresh light on Augustine's first and last decades as a bishop. Brown, a historian who pioneered the study of late antiquity, portrays Augustine as a man of his time while showing how his ideas transcended their context. Augustine grew up in Roman North Africa, trained as a rhetorician, passed through Manichaeism and skepticism, and converted to Christianity in Milan after reading Neoplatonist philosophy. He became bishop of Hippo and spent four decades preaching, writing, and administering a church facing schism and heresy. Brown traces the development of Augustine's ideas about grace, free will, original sin, and the relationship between church and state, ideas that would dominate Western thought for more than a millennium. He also examines Augustine's psychological depth, his introspection and anxiety, his struggles with sexuality and ambition. The biography combines intellectual history with vivid evocation of the late Roman world. Readers seeking to understand one of history's most influential minds will find Brown's account essential.