Rushdie is at his best when he breaks into short essays about the things he loves — cosmopolitan values, his sons, the women in his life. Out comes the distinctive voice, the tailored vocabulary, the dexterous explanations, the unstoppable intelligence. The heroine of the book is his third wife, Elizabeth West, whom he met during the fatwa, and to whose “determined, sanguine” conduct he gives a great deal of specificity. And yet even West’s saintliness is offered in counterpoint to the woman he left her for, the model Padma Lakshmi, whose vanity is described in gruesome detail — and who showed him that the miseries of his life didn’t begin and end with the fatwa.