What would it take at this point, amid the crush of books about the Trump White House — after the Mueller report and an impeachment trial and now the coronavirus pandemic — for a revelation about the president to be truly surprising? Would it be to learn that he hates money and harbours dreams of retiring to an ascetic, monk-like existence? That he loves to read and is intimately familiar with the works of Elena Ferrante? Readers who pick up Bob Woodward’s new book, Rage, and are tantalised by the promise on its dust jacket of “an utterly vivid window