Robert K. Greenleaf published two posthumous essay collections (available at Greenleaf.org). Today scores of colleges and universities include Servant Leadership in their curricula and hundreds of companies embrace Greenleaf's philosophy. As Greenleaf strived to serve through education, he became the leader of a movement. Bass, B. M., and Stogdill, R. M. (1990). "Bass & Stogdill's Handbook of Leadership: Theory, Research, and Managerial Applications" (3rd ed.). New York:Free Press. Frick, Don M. (2004)." Robert K. Greenleaf: A Life of Servant Leadership." San Francisco: Berrett-Koehler Publishers. Greenleaf, R.K. (2003). "The Servant-Leader Within: a Transformative Path" New York: Paulist Press. Greenleaf, R. K. (2002). "Servant Leadership:
Robert K. Greenleaf on leadership that identifies key moral behaviors that leaders must continuously demonstrate in order to make progress on Greenleaf’s (1977/2002) “best test.” The “best test,” which gives us the ethical ends for action, combined with Spears’ distillation of traits that identified the means, create a powerful framework for a review of the literature that furthers the conceptual framework for servant-leadership. Greenleaf was captivated by the idea of a servant actually being the leader. In "Essentials" he wrote, “As it was, the idea lay dormant for 11 years during which I came to believe that we in this country were in