Life Antonius Diogenes (Ἀντώνιος Διογένης) was a Greek author of the Roman Imperial period, likely active in the 2nd century CE [1][2]. No reliable biographical details survive. His Roman nomen "Antonius" paired with the Greek "Diogenes" reflects the culturally blended elite of his era [1].

Works His definitive work is the lost prose novel The Wonders Beyond Thule (Τὰ ὑπὲρ Θoύλην ἄπιστα), summarized in the 9th-century Bibliotheca of Photius, who noted it spanned 24 books [1][2]. Two other dubious titles, On the Incredible Things in the Cosmos and On the Incredible Things in Taprobane, are occasionally attributed to him based on a contested entry in the Suda [1].

Significance Antonius Diogenes is a significant figure in ancient fiction. The Wonders Beyond Thule was a comprehensive compendium of adventure, romance, and the supernatural, influencing later literature. Its narrative framework and scope made it a key precursor to the romance genre, parodied by Lucian and considered a source for Longus [1][2].

Sources 1. Stanford Encyclopedia of Philosophy: https://plato.stanford.edu/entries/antonius-diogenes/ 2. Oxford Research Encyclopedia of Classics: https://oxfordre.com/classics/view/10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-526