I would like to thank my diligent and inspiring editor, Leigh Haber, as well as my conscripted friends who were forced to read various drafts and held in a cellar until they offered in-depth commentary: Sarah Paley, Carol Muske-Dukes, Deborah Solomon, Sherle and John, Victoria Dailey, Susan Wheeler, April and Eric and Mary Karr. I would also like to thank Ricky Jay, who in minutes assembled a short treatise for my enlightenment on magic squares from his own amazing library. And Duke.