Thomas is the son of two first generation Jungian analysts, James and Hilde Kirsch, who began their analytic work with Jung in 1929. Through his family he met many of the first generation of Jungian analysts. He is a graduate of Yale Medical School (1961) and completed his psychiatric residency at Stanford Medical Center in 1965. A graduate of the C.G. Jung Institute of San Francisco, he has served there in many capacities, including being president from 1976 – 1978. Author of many papers on dreams, history of analytical psychology, and the analytic relationship, and editor of Jungian sections in encyclopedias and psychoanalytic dictionaries, he has now written a book on the history of analytical psychology.