Ecclesiastes says there is nothing new under the sun, and while the transgender movement may feel new and modern, it echoes a cult from ancient Rome—during a “culture war” not dissimilar from our own, according to the detransitioner Forrest Smith. The cult of Cybele or the Magna Mater, an ancient Roman “mystery religion,” highlighted effeminate men and even included the story of a man getting castrated in a religious ritual. “I learned about this because it was a piece of rhetoric within my former community that trans people have always existed,” Smith—a man who identified as a woman and went...