# His Τέχνη ῥητορική ("Art of Rhetoric") is a greatly interpolated handbook of rhetoric, a considerable portion being taken from the Rhetoric of Longinus and other material from Hermogenes;
A great deal of uncertainty exists regarding the history and real cause of the fact that the doctrines of the Seleucians so closely resembled those of Hermogenes, and because Hermogenes is not mentioned by Philastrius, conclude that these two were one and the same system of belief.
Hermogenes was the architect of the hexastyle peripteral Temple of Dionysus in Teos, also mentioned by Vitruvius.