"Confessions" is an utter masterpiece. To have not read that autobiography is a true loss. St. Augustine only spoke Latin. He had zero Greek. That alone cost him much I think. He was not in the same crowd as titans like the Cappadocian Fathers and other Eastern illumined masters, and there is something to be said about collaboration spiritually and caucusing with other enlightened men. St. Augustine had a tremendous amount of guilt about his perverse and passionate past. I feel he took man's fallen nature much further than the rest of the Fathers of those times, and it is some of St. Augustine's views that gave rise to other Western bad ideas. However, if you read De civitate Dei it is a true master work. After the sack of Rome and fall of the West, St. Augustine was a true shining source of encouragement, hope, and prayer. As a saint, we can learn from his journey, steadfast love of God, fierce faith, and how he changed his life for the better. His morality was amazing. But his views on sex, marriage, intimacy, pretty harsh. If you're truly interested, Father Seraphim Rose was a big fan of St. Augustine, and wrote some interesting things about him. The Orthodox Church doesn't see him as the red-headed stepchild hooligan some try to make it out to be.