Mainstream biblical scholars point out that much of the writings of antiquity have been lost and that there was little written about any Jew or Christian in this period. Ehrman points out that there is no known archaeological or textual evidence for the existence of most people in the ancient world, even famous people like Pontius Pilate, whom the myth theorists agree to have existed. Robert Hutchinson notes that this is also true of Josephus, despite the fact that he was "a personal favorite of the Roman Emperor Vespasian". Hutchinson quotes Ehrman, who notes that Josephus is never mentioned in 1st century Greek and Roman sources, despite being "a personal friend of the emperor". According to Classical historian and popular author Michael Grant, if the same criterion is applied to others: "We can reject the existence of a mass of pagan personages whose reality as historical figures is never questioned."