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The Teacher, written in the form of a dialogue between Augustine and his son Adeodatus, discusses linguistic philosophies, such as the association of words and their corresponding signs and the nature of that arrangement. This exposes the natural miscommunication that occurs between two conversing humans, establishing his concluding point: we are all called to listen, as God is the source of all true and substantial knowledge.

The second work, The Free Choice of the Will, also written as a dialogue, defends man’s free will to choose right and wrong against the Manichaean view of man as a battlefield in a spiritual war between good and evil.

Finally, Grace and Free Will, written against Pelagius to defend the necessity of grace (and simultaneously deny the sufficiency of free will), demonstrates that grace and free will are not mutually exclusive concepts.

Author Bio

Aurelius Augustinus (354–430) is often simply referred to as St. Augustine or Augustine Bishop of Hippo (the ancient name of the modern city of Annaba in Algeria). He is the preeminent Doctor of the Church according to Roman Catholicism, and is considered by Evangelical Protestants to be in the tradition of the Apostle Paul as the theological fountainhead of the Reformation teaching on salvation and grace.