[128] Diog. Laërt. VII. 136, 142, 156, 157; Plutarch, de plac. philos. IV. 21.

[129] Diog. Laërt. VII. 135; Stob. Eclog. phys. I. p. 178.

[130] Sext. Empir. adv. Math. IX. 101-103.

[131] Diog. Laërt. VII. 137.

[132] Sext. Empir. adv. Math. VII. 234; Diog. Laërt. VII. 138-140, 147, 148.

[133] Diog. Laërt. VII. 54, 46; Sext. Empir. adv. Math. VII. 227-230.

[134] Sext. Empir. adv. Math. VIII. 403, sqq.; cf. Senec. Epist. 107.

[135] Diog. Laërt. VII. 63; Sext. Emp. adv. Math. VIII. 70.

[136] Diog. Laërt. VII. 79, 80, 83.

[137] Cicer. De Officiis I. 3, III.; Diog. Laërt. VII. 98, 99.