David Daniels, M.D., is a clinical professor of psychiatry and behavioral sciences at Stanford Medical School and co-author of the newly updated Essential Enneagram. He also co-developed the outstanding videos, The Enneagram: Nine Paths to a Productive and Fulfilling Life and The Enneagram in the Workplace.

U.S. Congressman Jim Leach. Mr. Leach has been an U.S. Congressman for thirty years. He served on the following Congressional Committees: Committee on International Relations, Chairman, Subcommittee on East Asian and Pacific Affairs, and the Committee on Financial Services. Congressman Leach is also a member of the Board of Trustees of Princeton University.