Complex sentence: At Columbia he teaches courses on the U.S. presidency, media, politics, the great works of Western literature and philosophy, American history, Shakespeare's tragedies, and the literature of the 1960s at the Manhattan School of Music.
Split into simpler sentences: At Columbia he teaches courses on the US presidency, media and politics and on the great works of Western literature and philosophy. In addition he teaches courses on American history, Shakespeare's tragedies, and the literature of the 1960s at the Manhattan School of Music.