I’m deeply grateful to John and Ann Doerr, Laurene Powell, Mona Simpson, Leon Wieseltier, and Ken Auletta, all of whom provided invaluable support along the way. Alice Mayhew, who has been my editor at Simon & Schuster for thirty years, and Jonathan Karp, the publisher, both were extraordinarily diligent and attentive in shepherding this book, as was
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