Because he was a Jesuit, Irish-born Edward Boyd Barrett (1883–1966) had to submit his writing to Jesuit censors, who were charged with making sure that nothing in the documents was contrary to Roman Catholic faith and morals. Drawing upon archival records, this article shows the complexities of the censorship process in the early 20th century. Boyd Barrett’s Motive Force and Motivation-Tracks (1911), an experimental study in will-psychology completed under Michotte, was threatened with withdrawal from circulation after an anonymous review (which was not published) accused the book of modernism. In the 1920s, articles on psychoanalysis directed at a wide Catholic readership, received severe criticism by Jesuit censors, and some were not published. The article presents the censors’ objections and Boyd Barrett’s defense. One effect of censorship was to make psychoanalysis, at least in some formulations, acceptable to a Catholic readership.