On the other hand, some Egyptologists think that the ancient historians received their material for their stories not only from priests, but from the citizens living close to the time of the building of the necropolis. Among the "simple folk", also, negative or critical views about the pyramids might have been handed down, and the mortuary cult of the priests was surely part of tradition. Additionally a long-standing literary tradition does not prove popularity. Even if Khufu's name survived within the literary traditions for so long, different cultural circles surely fostered different views about Khufu's character and historical deeds. The narrations of Diodorus, for example, are credited with more trust than those of Herodotus, because Diodorus obviously collected the tales with much more scepsis. The fact that Diodorus credits the Giza pyramid to Greek kings, might be reasoned in legends of his lifetimes and that the pyramids were demonstrably reused in late periods by Greek and Roman kings and noblemen.