52. Rhet., I, ix.

53. De inst. orat., III, iv, 6.

54. Ibid., X, i, 28.

55. γραθική, Rhet. III, xii.

56. Orator, 37-38.

57. Rhet., I, ix.

58. Ad Herennium, I, 2; Cicero, De inventione, I, vii. De oratore, I, 142; Quintilian, De inst. orat., III, iii, i.

59. Aristotle, Rhetoric, III, xiii-xix; Cicero, Partit. orat., 15.

60. See above, pp. 13-14.

61. Cicero, De oratore, I. 143; Quint., De inst. orat., III, ix.