The conversion to Neoplatonism. Augustine traces his growing disenchantment with the Manichean conceptions of God and evil and the dawning understanding of God's incorruptibility. But his thought is still bound by his materialistic notions of reality. He rejects astrology and turns to the study of Neoplatonism. There follows an analysis of the differences between Platonism and Christianity and a remarkable account of his appropriation of Plotinian wisdom and his experience of a Plotinian ecstasy. From this, he comes finally to the diligent study of the Bible, especially the writings of the apostle Paul. His pilgrimage is drawing toward its goal, as he begins to know Jesus Christ and to be drawn to him in hesitant faith.