Demetrius Phalereus, either or both of which Cicero might have used. One
passage in § 67, _facilius in morbos ... tristius curantur_, is supposed by
many to have been imitated from Hippocrates; but the resemblance is
probably accidental. Cf. De Off. 1, 24, 83.

[22] See § 2.

[23] See Att. 16, 11, 3; 16, 3, 1; 14, 21, 3.

[24] § 2.

[25] As Cicero's intention was to set old age in a favorable light, he
slights Aristo Cius for giving to Tithonus the chief part in a dialogue on
old age. See § 3; cf. also Laelius, § 4.

[26] See below (ii.), 1.

[27] On the whole subject of Aristotle's dialogues see Bernays' monograph,
_Die Dialoge des Aristoteles_.

[28] § 32 _quartum ago annum et octogesimum_. Cf. Lael. 11 _memini Catonem
ante quam est mortuus mecum et cum Scipione disserere_ etc.

[29] Cicero always indicates this date; cf. § 14. Some other writers, as
Livy, give, probably wrongly, an earlier date.

[30] He himself says (Festus, p.28l) _ego iam a principio in parsimonia
atque in duritia atque industria omnem adulescentiam, abstinui agro
colendo, saxis Sabinis silicibus repastinandis atque conserendis_. Cf.
Gell. _Noct. Att._ 13, 23.