[153] See vi. 2.7.
[154] See v. 3.11.
[155] See iii. 9.6.
[156] See vi. 5.11.
[157] See v. 3.13.
[158] Arist. Met. xii. 7.
[159] As thought Plato, Rep. vi., p. 508, Cary, 19.
[160] See iv. 3.1.
[161] Letter ii. 312; Cary, p. 482.
[162] See i. 6, end.