He has worked on six continents, and consulted to a wide array of organizations. In addition to his contributions to the education of social workers, he also teaches in the Fels Institute of Government and the Aresty Institute of Executive Education at Wharton. His most recent books are MANNA in the Wilderness of AIDS: Ten Lessons in Abundance (2002), Yearning for Home in Troubled Times (2003) and Freed to be Fathers: Lessons from Men Doing Time (2003).