Academia
（Ἀκαδήμεια).
1.
A public garden or grove in the suburbs of Athens, about six stadia from the city, named from Academus or Hecademus, who left it to the citizens for gymnastics (Paus.i. 29). It was surrounded with a wall by Hipparchus, adorned with statues, temples, and sepulchres of illustrious men; planted with olive and plane trees, and watered by the Cephissus. The olive-trees, according to Athenian fables, were reared from layers taken from the sacred olive in the Erechtheum, and afforded the oil given as a prize to victors at the Panathenaean festival. Few retreats could be more favorable to philosophy and the Muses. Within this enclosure Plato possessed, as part of his patrimony, a small garden, in which he opened a school for the reception of those inclined to attend his instructions. Hence arose the Academic sect, and hence the term Academy has descended to our times. The appellation Academia is frequently used in philosophical writings, especially in Cicero, as indicative of the Academic sect. See Philosophia.Sextus Empiricus enumerates five divisions of the followers of Plato. He makes Plato founder of the first Academy, Arcesilaüs of the second, Carneades of the third, Philo and Charmides of the fourth, Antiochus of the fifth. Cicero recognizes only two Academies, the Old and New, and makes the latter commence as above with Arcesilaus. In enumerating those of the Old Academy, he begins, not with Plato, but Democritus, and gives them in the following order: Democritus, Anaxagoras, Empedocles, Parmenides, Xenophanes, Socrates, Plato, Speusippus, Xenocrates, Polemo, Crates, and Crantor. In the New, or Younger, he mentions Arcesilaüs, Lacydes, Evander, Hegesinus, Carneades, Clitomachus, and Philo (Acad. Quaest. iv. 5). If we follow the distinction laid down by Diogenes, and alluded to above, the Old Academy will consist of those followers of Plato who taught the doctrine of their master without mixture or corruption; the Middle will embrace those who, by certain innovations in the manner of philosophizing, in some measure receded from the Platonic system without entirely deserting it; while the New will begin with those who relinquished the more obnoxious tenets of Arcesilaüs, and restored, in some measure, the declining reputation of the Platonic school (see Plato).
2.
A villa of Cicero near Puteoli (Pliny, H. N. xxxi. 2).