Drew's faculty, starting with John McClintock and James Strong—especially with his magnum opus, "Strong's Concordance"—to recent faculty members including philosopher Robert S. Corrington, the founder of "ecstatic naturalism"; ethics professor Thomas C. Oden, the founder of paleo-orthodoxy, and Leonard Sweet, a leader in the emerging church movement, have continued to impact Christian theology and spiritual scholarship. Other faculty have included lexicographer Robert L. Chapman, editor of the fourth and fifth editions of "Roget's Thesaurus"; Ira Progoff, a psychotherapist, developed the Intensive Journal Method, and researcher of depth psychology; and Irish history scholar Christine Kinealy. William Campbell, research fellow in Drew's RISE institute, was awarded the 2015 Nobel Prize in Physiology or Medicine.