Alexander Philalethes (Ancient Greek: Ἀλέξανδρος Φιλαλήθης) was an ancient Greek physician,[1] whom Priscian called Alexander Amator Veri (Alexander Truth-Lover),[2] and who was probably the same person quoted by Caelius Aurelianus under the name of Alexander Laodicensis.[3] He lived probably towards the end of the 1st century BC, as Strabo speaks of him as a contemporary.[4] He was a pupil of Asclepiades of Bithynia,[2] succeeded an otherwise unknown Zeuxis as head of a celebrated Herophilean school of medicine, established in Phrygia between Laodicea and Carura,[4] and was tutor to Aristoxenus and Demosthenes Philalethes.[5] He is several times mentioned by Galen and also by Soranus,[6] and appears to have written some medical works, which are no longer extant. The view, once current, that Alexander's Areskonta served as a doxographical basis for such authors as Anonymus Londinensis, Aetius the doxographer, Soranus of Ephesus, and Anonymus Bruxellensis is an inference on the basis of flimsy evidence.[7]