Source : Howard Thurman (1963). “Disciplines of the spirit”, Friends United Pr
Howard ThurmanSource : Dr. Norman Vincent Peale (2007). “The Positive Principle Today”, p.153, Simon and Schuster
Source : Joe Meno (2008). “Demons in the Spring”, p.130, Akashic Books
A. Bartlett Giamatti
Commissioner of Baseball
Benjamin E. Mays
Critic
Ken Robinson
Author
Mahatma Gandhi
Lawyer
Martin Luther King, Jr.
Civil rights activist
Vincent Harding
Historian