Robert A.F. Thurman, PhD, Professor of Indo-Tibetan Studies at Columbia, President of Tibet House US, a popular lecturer on Tibetan Buddhism and translator of many philosophical treatises and sutras, is the author of numerous books including the national bestseller, Inner Revolution: Life, Liberty, and the Pursuit of Real Happiness, and Anger (the fifth book from a series on the Seven Deadly Sins). His most recent book is The Jewel Tree of Tibet: the Enlightenment Engine of Tibetan Buddhism.