Thomas B. Lewis, M.D. is an assistant clinical professor of psychiatry at the University of California, San Francisco (UCSF) School of Medicine, and holds the Robert E. Fordham Chair in Exploratory Neuroscience at Fromm Institute at the University of San Francisco. A renowned psychiatrist and psychopharmacologist, Dr. Lewis is the author of A General Theory of Love (Random House, 2000), a nonfiction book for the general public that elucidates the psychobiology of human relationships. He has consulted with major motion picture productions and the California Shakespeare Festival on the science of emotion and its role in the dramatic arts. In addition, he speaks around the world on topics related to the intersection between neuroscience and human experience.