I am grateful for the time, energy, and most helpful suggestions offered by Ibtihaj Arafat, Alan Goldberg, Chris Lawrence, Margarita Levin, Michael Levin, Elizabeth Mayers, Michael Mayers, Mitchell Meltzer, David Singmaster, Faith Scheer, Tuck Washburn, Francis Wilson, and, of course, my wife, Joan Downs Goldberg, without whose inspiration and advice this book could not have come to fruition. And special thanks go to my editor, Laura Parise, and to the marvelous staff at Transaction Publishers whose suggestions made this a better book than it otherwise would have been.