[191] De Amic. 4; de Off. iii. 28; pro Cluent. 61; de Legg. ii. 17: Tusc. Quæst. i. 11; pro Sext. 21; de Nat. Deor. i. 17.

[192] De Senect. 23.

[193] Pro Arch. 11, 12, ad Fam. v. 21, vi. 21.

[194] He seems to have fallen into some misconceptions of Aristotle's meaning. De Invent. i. 35, 36, ii. 14; see Quinct. Inst. v. 14.

[195] De Invent. i. 7, ii. 51, et passim; ad. Fam. i. 9; de Orat. ii. 36.

[196] De Off. i. 1; de Fin. iv. 5.

[197] De Fin. ii. 21, iii. 1; de Legg. i. 13; de Orat. iii. 17; ad Fam. xiii. 1; pro Sext. 10.

[198] De Nat. Deor. i. 4; Tusc. Quæst. i. 1, v. 29; de Fin. i. 3, 4; de Off. i. 1; de Div. ii. 1, 2.

[199] Div. Leg. lib. iii. sec. 9.

[200] See Tusc. Quæst and de Republ.