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 Spencer (author) Appeals dismissed the appeal, arguing that "this was a public order case where the police had advised that significant public disorder and serious violence might ensue from the proposed visit." The ban was criticised by Douglas Murray. He noted that Islamist hate preachers are still allowed to enter the UK. Robert Spencer (author) Robert Bruce Spencer (born February 27, 1962) is an American author and blogger and a key figure of the "counter-jihad" movement in the United States. He appears frequently on Fox News and has given seminars to various law enforcement units in the United States. Spencer, a self-proclaimed