So begins Nick Tosches's sprawling biography of Arnold Rothstein, which, in fact, is so much more: not only an elegy to old New York but an idiosyncratic history of the world as told in Nick Tosches's inimitable style. Known by many names -- A. R., Mr. Big, The Fixer, The Big Bankroll, The Man Uptown, and The Brain -- Rothstein seemed more myth than man. He was gambling, and he was money. The inspiration for Meyer Wolfsheim...