[154] Diog. Laërt. II. 135.

[155] Diog. Laërt. II. 108; Bruckeri Hist. Crit. Phil. T. I. p. 613.

[156] Diog. Laërt. II. 108; Cicer. Acad. Quæst. IV. 29; Bruck. Hist. Crit. Philos. T. I. p. 614, not. s.

[157] Aristoteles: De Soph. Elench. c. 14; Buhle ad h. 1. argumentum, p. 512.

[158] Diog. Laërt. II. 113, 115, 119.

[159] Plutarch, advers. Coloten. c. 22, 23, pp. 1119, 1120, ed. Xyl. pp. 174-176, Vol. XIV. ed. Hutten.

[160] Diog. Laërt. II. 65; Tennemann, Vol. II. p. 103: Bruck. Hist. Crit. Philos. T. I. p. 584, seq.

[161] Diog. Laërt. II. 66, 67, 72, 77 (Horat. Serm. II. 3, v. 101), 79-81.

[162] Sext. Empir. adv. Math. VII. 191, 199, 200.

[163] Diog. Laërt. II. 97, 98 (101, 102).