[481] Institutes of Manu, ch. 1, v. 5.
[482] Xénophon, Mém., l. iv., p. 796; Plat., in Alcib., i.; ibid., in Charm.; Pausan., l. x.; Plin., l. vii., c. 32.
[483] In Alcibiad., i.
[484] Cicér., Acad. Quæst., l. ii., c. 24; Sext. Empir., Hypotyp., l. i., c. 4 et 12.
[485] Diog. Laërt., l. iv., § 10; Cicer., Acad. Quæst., l. ii., c. 18.
[486] Desland, Hist. Critiq. de la Philosoph., t. ii., p. 258.
[487] Euseb., Præp. Evan., l. xiv., c. 4.
[488] The Greek word is derived from the verb καλύπτειν, to cover with a veil.
[489] Bayle, Dict. crit., art. Arcésilas.
[490] Sextus Empiricus, who was not a man to advance anything thoughtlessly, alleges that Arcesilaus was only a skeptic in semblance and that the doubts which he proposed to his listeners had no other aim than that of seeing if they had enough genius to understand the dogmas of Plato. When he found a disciple who evinced the necessary force of mind, he initiated him into the true doctrine of the Academy (Pyrrh. hypotyp., l. i., c. 33).