For fans of the novelist-pugilist, this posthumous fruit of his correspondence — 716 letters out of almost 50,000 — is indispensable. For anyone interested in the intellectual battles of the past 60 years, it provides a detailed road map of the controversies and egos involved. (Correspondents included Jackie Kennedy, Marlon Brando, Henry Kissinger, both Clintons, and pretty much every white writer of his generation.) And for the rest, it’s a subtle document of an unsubtle man’s wit and erudition, even (or especially) when it’s wielded as a weapon.