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:
So Beautiful or So What recording of "So Beautiful or So What" himself after being released from his 30-year record contract with Warner Bros. Records. After the recording sessions were finished, he signed a deal with Concord Music Group to distribute the album. Simon said, "It's the best work I've done in 20 years." The cover art, titled "DNA Mutation", was designed by visual artist and NASA systems engineer Sven Geier. "So Beautiful or So What" finds Simon returning to more harmonic-based compositions than rhythm-based. This was spurred from when he realized his favorite song on his 2006 effort "Surprise", "Everything About It Is a