Howard Washington Thurman (1899−1981) was an influential African American author, philosopher, theologian, educator, and civil rights leader. He played a leading role in many social justice movements and organizations of the twentieth century and was one of the leading religious figures of twentieth-century America. Thurman’s theology of radical nonviolence influenced and shaped a generation of civil rights activists and he was a key mentor to leaders within the movement such as Martin Luther King, Jr.