In The Appendix, Rachel Ozanne discusses the silent history of the Quakers and how it has defined them. “Quakers reinforced their own group identity as a people who did not make noise during worship. Methodists, by contrast, used ecstatic worship practice to gain and consolidate a community, attracting a steady stream of new converts. In either case, the community’s relationship to holy sounds—whether silent or out loud—was essential to defining who belonged.”