Anaximenes of Lampsacus (; ; 320 BC) was a Greek rhetorician and historian. He was one of the teachers of Alexander the Great and accompanied him on his campaigns. Family His father was named Aristocles (). His nephew (son of his sister), was also named Anaximenes and was a historian. Rhetorical works Anaximenes was a pupil of Diogenes the Cynic and Zoilus and, like his teacher, wrote a work on Homer. As a rhetorician, he was a determined opponent of Isocrates and his school. He is generally regarded as the author of the Rhetoric to Alexander, an Art of Rhetoric included in the traditional corpus of Aristotle's works. Quintilian seems to refer to this work under Anaximenes' name in Institutio Oratoria 3.4.9, as the Italian Renaissance philologist Piero Vettori first recognized. This attribution has, however, been disputed by some scholars. The hypothesis to Isocrates' Helen mentions that Anaximenes, too, had written a Helen, "though it is more a defense speech (apologia) than an encomium," and concludes that he was "the man who has written about Helen" to whom Isocrates refers (Isoc. Helen 14). Jebb entertained the possibility that this work survives in the form of the Encomium of Helen ascribed to Gorgias: "It appears not improbable that Anaximenes may have been the real author of the work ascribed to Gorgias." According to Pausanias (6.18.6), Anaximenes was "the first who practised the art of speaking extemporaneously." He also worked as a logographer, having written the speech prosecuting Phryne according to Diodorus Periegetes (quoted by Athenaeus XIII.591e). The "ethical" fragments preserved in Stobaeus' Florilegium may represent "some philosophical book." According to Suda, no one before Anaximenes had invented improvised speeches. Historical works Anaximenes wrote a history of Greece in twelve books, stretching from the gods' origins to the death of Epaminondas at the Battle of Mantinea (Hellenica, ), and a history of Philip of Macedon (Philippica). He was a favorite of Alexander the Great, whom he accompanied in his Persian campaigns, and wrote a third historical work on Alexander (however, Pausanias 6.18.6 expresses doubt about his authorship of an epic poem on Alexander). He was one of the eight exemplary historiographers included in the Alexandrian canon. Didymus reports that the work transmitted as speech 11 of Demosthenes (Against the Letter of Philip) could be found in almost identical form in Book 7 of Anaximenes' Philippica, and many scholars regard the work as