[88] Diog. Laërt. x. 33 seq.; Sext. Emp. Adv. Math. vii. 211.

[89] Diog. Laërt. x. 87; cf. Lucretius, vi. 703 sq., v. 526 sqq. (ed. Munro).

[90] Sextus Empiricus, Pyrrhon. Hypotyp. ii. 195, 196.

[91] Sextus, op. cit. ii. 204.

[92] Op. cit. iii. 17 sqq., and especially 28.

[93] The point is raised by Aristotle, 95A.

[94] See Jourdain, Recherches critiques sur l’âge et l’origine des traductions latines d’Aristote (1843).

[95] See E. Cassirer, Das Erkenntnisproblem, i. 134 seq., and the justificatory excerpts, pp. 539 sqq.

[96] See Riehl in Vierteljahrschr. f. wiss. Philos. (1893).

[97] Bacon, Novum Organum, ii. 22, 23; cf. also Aristotle, Topics i. 12. 13, ii. 10. 11 (Stewart, ad Nic. Eth. 1139b 27) and Sextus Empiricus, Pyrr. Hypot. iii. 15.