Theodorus of Gadara
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Theodorus of Gadara (Greek: Θεόδωρος ὁ Γαδαρεύς Theódoros o Gadaréfs) was a Greek rhetorician of the 1st century BC who founded a rhetorical school in Gadara (present-day Um Qais, Jordan), where he taught future Roman emperor Tiberius the art of rhetoric. It was written of Tiberius that:
- ...even in his boyhood, his cruel and cold nature did not lie hidden. Theodorus of Gadara was his teacher of rhetoric and, in all his wisdom, seems to have been the first to have understood Tiberius and to have capped him with a very pithy saying when he taunted Tiberius, calling him 'Mud kneaded with blood'... .
Theodorus was one of the two most famous rhetoric teachers of the time, the other being Apollodorus of Pergamon. Students of Apollodorus were commonly referred to as Apollodoreans, while students of Theodorus were known as Theodoreans.
- On Questions in Pronunciation (Περὶ τῶν ἐν φωναῖς ζητουμένων, in 3 books)
- On History (Περὶ ἱστορίας, 1 book)
- On Thesis (Περὶ θέσεως, 1 book)
- On the Similarity of Dialects and its Demonstration (Περὶ διαλέκτων ὁμοιότητος καὶ ἀποδείξεως, 2 books)
- On the Constitution (Περὶ πολιτείας, 2 books)
- On Coele Syria (Περὶ Κοίλης Συρίας, 1 book)
- On the Capacity of the Orator (Περὶ ῥήτορος δυνάμεως, 1 book)
- Suetonius, Lives of the Twelve Caesars, Tiberius 57
- Suda θ 151