Complex sentence: He gained a reputation as a popular lecturer in Cambridge, and between 1982 and 1983 gave the Sarum Lectures in Oxford, for which his subject was Augustine of Hippo, edited; these lectures became the basis for his 1986 book, "Augustine".
Split into simpler sentences: He gained a reputation as a popular lecturer in Cambridge, and between 1982 and 1983 gave the Sarum Lectures in Oxford, for which his subject was Augustine of Hippo. Edited, these lectures became the basis for his 1986 book, "Augustine".