Siculus Diodorus

Writing in the 1st century BCE, Diodorus Siculus was a Greek historian from Agyrium in Sicily. He is known above all for the Bibliotheca historica, a vast universal history that gathered material on Greek, Roman, Egyptian, and Near Eastern traditions into a single long narrative.

Only part of this huge work survives, but what remains is still valuable because it preserves reports from many earlier historians whose own books have disappeared. That makes him important not just as a storyteller of the ancient world, but also as a bridge to lost historical writing.

Modern readers often meet him as a compiler rather than an original analyst, yet that role is exactly why he matters. His history offers a wide, ambitious view of the ancient world and continues to be a key source for classicists and general readers alike.