Feisal Abdul Rauf, the imam who runs the Cordoba Initiative with his wife, named his project “after the period between roughly 800 and 1200 CE, when the Cordoba Caliphate ruled much of today’s Spain, and its name reminds us that Muslims created what was, in its era, the most enlightened, pluralistic, and tolerant society on earth,” he wrote in his 2004 book What’s Right With Islam.