Xenophilus (philosopher)

Xenophilus (Greek: Ξενόφιλος; 4th century BC), of Chalcidice,[2] was a Pythagorean philosopher and music theorist who lived in the first half of the 4th century BC.

[3] Aulus Gellius relates that Xenophilus was the intimate friend and teacher of Aristoxenus and implies that Xenophilus taught him Pythagorean doctrine.

[5] According to Diogenes Laërtius, Aristoxenus wrote that when Xenophilus was once asked by someone how he could best educate his son, Xenophilus replied, "By making him the citizen of a well-governed state.

"[6] In the Macrobii of Pseudo-Lucian, Aristoxenus is supposed to have said that Xenophilus lived 105 years.

[7] Xenophilus enjoyed considerable fame in the Renaissance, apparently because of Pliny's claim that he lived 105 years without ever being sick.