For the remaining half of the book, Greenfeld expounds her thesis. Prior to the Renaissance, religious beliefs were widely shared, and sociopolitical organization was hierarchical. Status was ascribed rather than achieved. And insanity prevalence was low, albeit with special vulnerability among learned, politically elite, and artistic people. Beginning during the 17th and 18th centuries in England, insanity proliferated geometrically from prevalence rates of one in thousands to one in hundreds. In parallel, a modern statehood model (termed “nationalism”) appeared, marked by secularism, growing egalitarianism, social mobility from parent to offspring, rising literacy, novel occupations, university learning, passion, and romance. The first western mental institution appeared (Bedlam in London), followed by the steady evolution of psychiatry within medicine and insanity law within jurisprudence. From England, the insanity epidemic (along with its companion, suicide) spread across Europe and North America within a few centuries.