David Cameron is constantly advised “to bring out his inner semite” by his chum Lord Feldman, according to extracts in the Mail on Sunday from Antony Seldon’s new biography of the Prime Minister. It is an aspect that the Tory Party chairman thinks explains the PM’s warmer side.Cameron is descended from Elija Levita, the 16th-century author of the Bovo-Bukh — which might sound like a guidebook for skinheads but is a collection of Yiddish stories that later gave its name to bubbemeises, “old wive’s tales”.