The book ""St. Augustin the Writings Against the Manicheans and Against the Donatists: Nicene and Post-Nicene Fathers of the Christian Church V4"" is a collection of writings by Saint Augustin, a prominent figure in the early Christian church. The book contains his writings against two heretical groups, the Manicheans and the Donatists. The Manicheans were a Gnostic sect that believed in a dualistic worldview, while the Donatists were a schismatic...