Diodorus Siculus (; Diodoros Sikeliotes) or Diodorus of Sicily was a Greek historian. He is known for writing the monumental universal history Bibliotheca historica, much of which survives, between 60 and 30 BC. It is arranged in three parts. The first covers mythic history up to the destruction of Troy, arranged geographically, describing regions around the world from Egypt, India and Arabia to Greece and Europe. The second covers the Trojan War to the death of Alexander the Great. The third covers the period to about 60 BC. The title Bibliotheca, meaning 'library', acknowledges that he was drawing on the work of many other authors.