The literary importance of the Phoenician cities under the Romans is altogether remarkable. Under Augustus and Tiberius—especially from about B.C. 40 to A.D. 20—Sidon was the seat of a philosophical school, in which the works of Aristotle were studied and explained,[14489] perhaps to some extent criticised.[14490] Strabo attended this school for a time in conjunction with two other students, named Boethus and Diodotus. Tyre had even previously produced the philosophers, Antipater, who was intimate with the younger Cato, and Apollonius, who wrote a work about Zeno, and formed a descriptive catalogue of the authors who had composed books on the subject of the philosophy of the Stoics.[14491] Strabo goes so far as to say that philosophy in all its various aspects might in his day be better studied at Tyre and Sidon than anywhere else.[14492] A little later we find Byblus producing the semi-religious historian, Philo, who professed to reveal to the Greeks the secrets of the ancient Phoenician mythology, and who, whatever we may think of his judgment, was certainly a man of considerable learning. He was followed by his pupil, Hermippus, who was contemporary with Trajan and Hadrian, and obtained some reputation as a critic and grammarian.[14493] About the same time flourished Marinus, the writer on geography, who was a Tyrian by birth, and “the first author who substituted maps, mathematically constructed according to latitude and longitude, for the itinerary charts” of his predecessors.[14494] Ptolemy of Pelusium based his great work entirely upon that of Marinus, who is believed to have utilised the geographical and hydrographical