Secrecy: Silence, Power, and Religion. By Hugh Urban. Chicago: University of Chicago Press, 2021. 264 pages. $30.00 (paperback). ISBN: 978-0-226-74664-7. Hugh Urban’s book Secrecy: Silence, Power, and Religion examines the meanings of “secrecy” in six “esoteric movements” in the nineteenth and twentieth centuries. Engaging esoteric movements in the US and Europe, Urban analyzes the ways secrecy can be used to…