Complex sentence: He lectured on Greek and Latin playwrights and poets, especially Aeschylus, Aristophanes, Plautus, Catullus and Horace, and taught classes on the literary history of the Greeks and Romans, as well as on the metrics and poetics of the Romans.
Split into simpler sentences: He lectured on Greek and Latin playwrights and poets, especially Aeschylus, Aristophanes, Plautus, Catullus and Horace. He also taught classes on the literary history of the Greeks and Romans, as well as on the metrics and poetics of the Romans.