 However, according to historian Joseph Ellis, "Johnson's presence precluded its reunification" so he was "sacrificed for college unity" and lost his job as tutor.Out of a job, he designed a new curriculum for a Yale now run by his friend Rector Timothy Cutler and Tutor Daniel Brown, studied religion and philosophy, and wrote up a book on "Logic "(1720), which may have been used as class notes at Yale, but was not published in his lifetime.In 1720, Johnson became Congregationalist minister of a church in West Haven, Connecticut.