ὅπλον μέγιστόν ἐστιν ἡ ἀρετή βροτοῖς → man's greatest weapon is virtue, virtue is the greatest weapon for mortals
hydraulus: i, m., = ὕδραυλος,
I a water-organ, Cic. Tusc. 3, 18, 43; Plin. 9, 8, 8, § 24.
hўdraulus, ī, m. (ὕδραυλος), orgue hydraulique : Cic. Tusc. 3, 43 ; Plin. 9, 24.