Thomas R. Trautmann Thomas R. Trautmann is the author of Kautilya and the Arthashastra (1971) and other books on ancient India, including Aryans and British India (1997), The Aryan Debate (2005), Languages and Nations: The Dravidian Proof in Colonial Madras (2006) and India: Brief History of a Civilization (2010). He is professor emeritus of history and anthropology at the University of Michigan.