Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. A redacted correspondent, who sounds to be on the younger side of things, emails Jeffrey Epstein to thank him for their “fun” talk. Then the correspondent remarks: “I seldom have the chance to talk to a genetic suprematist.” I found this message while spending a week with what our Justice Department has dubbed—oddly, for this reader at least—the “Epstein Library.” Otherwise known as the Epstein files, this “library” is laden with crudity, eye-piercing typos, and rants about genetics. And...