“Ryan J. MARR, To be perfect is to have changed often: the development of John Henry Newman’s ecclesiological outlook, 1845-1877, Lanham, Boulder, New York, London: Lexington Books/Fortress Academic, 2018, 195 pp., 13 x 22, ISBN 978-1-978700-57-4”. (2021) Scripta Theologica, 53(1), p. 255. doi:10.15581/006.53.41329.