Manichaeism taught that life constitutes of an eternal struggle between the kingdom of light and darkness. This article explains why this teaching is heretical and what is its relevance for the church today.

The article provides a short biographical account of Augustine (354-430). It touches on, among other things, his childhood, parents, schooling, and training, till his conversion. Some of the confrontations he made in his search for truth and in his teachings include those with Manichaeism, Pelagianism, and Donatism.