The Academy (Ancient Greek: Ἀκαδημία) was founded by Plato in
ca. 387 BC in Athens. Aristotle studied there for twenty years
(367 BC - 347 BC) before founding his own school, the Lyceum.
The Academy persisted throughout the Hellenistic period as a
skeptical school, until coming to an end after the death of
Philo of Larissa in 83 BC. Although philosophers continued to
teach Plato's philosophy in Athens during the Roman era, it was
not until AD 410 that a revived Academy was re-established as a
center for Neoplatonism, persisting until 529 AD when it was
finally closed down by Justinian I. Diogenes Laërtius divided
the history of the Academy into three: the Old, the Middle, and
the New. At the head of the Old he put Plato, at the head of the
Middle Academy, Arcesilaus, and of the New, Lacydes. Sextus
Empiricus enumerated five divisions of the followers of Plato.
He made Plato founder of the first Academy; Arcesilaus of the
second; Carneades of the third; Philo and Charmadas of the
fourth; Antiochus of the fifth