D. Elton Trueblood (1900-1994) authored 37 books and was called "the Dean of American Religious Writing" in the 20th century. This, being his most important book, served as a quarter-century sequel to Mere Christianity by C.S. Lewis. Trueblood taught at Guilford, Haverford, and Earlham, and he served as chaplain at Stanford, where he met regularly with Herbert Hoover. As founder of the Yokefellows movement, he designed a discipline for believers embracing the "yoke of Christ" (Matthew 11:29), established prison ministries, and developed programs for turning the local church into a seminary, believing that every Christian is a minister.