were stationed at Tyre (in modern-day Lebanon), Alexander had his generals act as judges not only for athletic contests but also stage performances of Greek tragedies. The contemporaneous famous actors Thessalus and Athenodorus performed at the event, despite Athenodorus risking a fine for being absent from the simultaneous Dionysia festival of Athens where he was scheduled to perform (a fine that his patron Alexander agreed to pay). Music was also appreciated in Macedonia. In addition to the agora, the gymnasium, the theatre, and religious sanctuaries and temples dedicated to Greek gods and goddesses, one of the main markers of a true Greek city in the empire of Alexander the Great was the presence of an odeon for musical performances. This was the case not only for Alexandria in Egypt, but also cities as distant as Ai-Khanoum in what is now modern-day Afghanistan. Literature, education, philosophy, and patronage Perdiccas II of Macedon was able to host well-known Classical Greek intellectual visitors at his royal court, such as the lyric poet Melanippides and the renowned medical doctor Hippocrates, while Pindar's enkomion written for Alexander I of Macedon may have been composed at his court. Yet Archelaus I of Macedon received a far greater number of Greek scholars, artists, and celebrities at his court than his predecessors, leading M. B. Hatzopoulos to describe Macedonia under his reign as an "active centre of Hellenic culture." His honored guests included the painter Zeuxis, the architect Callimachus, the poets Choerilus of Samos, Timotheus of Miletus, and Agathon, as well as the famous Athenian playwright Euripides. Although Archelaus was criticized by the philosopher Plato, supposedly hated by Socrates, and the first known Macedonian king to be insulted with the label of a barbarian, the historian Thucydides held the Macedonian king in glowing admiration for his accomplishments, including his engagement in panhellenic sports and fostering of literary culture. The philosopher Aristotle, who studied at the Platonic Academy of Athens and established the Aristotelian school of thought, moved to Macedonia, and is said to have tutored the young Alexander the Great, in addition to serving as an esteemed diplomat for Alexander's father Philip II. Among Alexander's retinue of artists, writers, and philosophers was Pyrrho of Elis, founder of Pyrrhonism, the school of philosophical skepticism. During the Antigonid period, Antigonos Gonatas fostered cordial relationships with Menedemos of Eretria, founder of the Eretrian school of philosophy, and Zenon, the founder of