Diodorus Siculus was a Greek historian, who wrote a universal history, Bibliotheca Historica. This history consisted of forty books and was divided into three parts: * The mythic history of the non-Hellenic and Hellenic tribes up to the destruction of Troy * Through the death of Alexander the Great * Through the beginning of Caesar's Gallic Wars Diodorus lived in the time of Julius Caesar and Augustus. His own statements make it clear that he travelled in Egypt during 60–57 BCE and spent several years in Rome. The latest event mentioned by him belongs to the year 21 BCE.