Complex sentence: He also wrote a biography of his teacher, and many commentaries and philosophical works, some of which survive and is famous for his attacks on Christianity compiled in his "Adversus Christianos", of which only fragments preserved by his Christian opponents remain.
Split into simpler sentences: He also wrote a biography of his teacher, and many commentaries and philosophical works, some of which survive. He is also famous for his attacks on Christianity compiled in his "Adversus Christianos", of which only fragments preserved by his Christian opponents remain.