Philo of Larissa in the context of "Clitomachus (philosopher)"

37°59′33″N 23°42′29″E / 37.99250°N 23.70806°E / 37.99250; 23.70806

The Academy (Ancient Greek: Ἀκαδημία, romanized: Akadēmia) 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 closed down by Justinian I.

Academic skepticism was the philosophy of the skeptical period of the Academy dating from around 266 BCE, when Arcesilaus became scholarch, until around 90 BCE, when Antiochus of Ascalon rejected skepticism, although individual philosophers, such as Favorinus and his teacher Plutarch, continued to defend skepticism after this date. Unlike the existing school of skepticism, the Pyrrhonists, they maintained that knowledge of things is impossible. Ideas or notions are never true; nevertheless, there are degrees of plausibility, and hence degrees of belief, which allow one to act. The school was characterized by its attacks on the Stoics, particularly their dogma that convincing impressions led to true knowledge. The most important Academics were Arcesilaus, Carneades, and Philo of Larissa. The most extensive ancient source of information about Academic skepticism is Academica, written by the Academic skeptic philosopher Cicero.

Antiochus of Ascalon (/ænˈtaɪəkəs/; Ancient Greek: Άντίοχος ὁ Ἀσκαλώνιος; c. 135/130 – c. 68 BC) was a 1st-century BC Platonist philosopher. He rejected skepticism, blended Stoic doctrines with Platonism, and wasthe first philosopher in the tradition of Middle Platonism.

Antiochus moved to Athens early in his life and became a pupil of Philo of Larissa at the Platonic Academy, but he went on to reject the prevailing Academic skepticism of Philo and his predecessors. This led to his resignation from the academy and the establishment of his own school, which he named the "Old Academy" as he claimed it was closer to original doctrines of Platonism that he believed had been betrayed by the skeptics of the New Academy under Philo. His students at this new institution included the Roman politicians Varro and Cicero. Antiochus was also the friend of the Roman politician and general Lucullus, whom he accompanied on a trip to North Africa and on a campaign to Armenia.