[1] Mentioned by Diogenes Laertius 10.3. For Epicurus see generally epsilon 2404. Since E.'s father was also called Neokles, this present Neokles was evidently the eldest (of four brothers).
[2] cf. Julian, Letter to Themistius 255b Bidez-Cumont. The point is evidently polemical: others attributed the phrase to Epicurus himself or else to Democritus. At any rate it became proverbial (lambda 41; Philostratus, Life of Apollonius of Tyana 8.28; etc.), and Plutarch devoted an entire work to it (Moralia 1128Aff), entitled Whether the phrase "live unobtrusively" is well said.