Over the centuries, Quakers have thought about coercion, violence and war in many different ways. This talk will examine the ways in which Henry J. Cadbury (1883-1974)—one of the more prominent figures in the history of modern Quakerism — thought about those issues. In 1919, Haverford’s Board of Mangers accepted Henry Cadbury’s resignation from the college’s faculty. The resignation grew out a controversy connected to Cadbury’s vociferous advocacy of peace. This talk will examine Cadbury’s views on peace, coercion, and war and about what hose views tell use about the history of the Quaker “Peace Testimony.”