Τί κοινότατον; ἐλπίς. καὶ γὰρ οἷς ἄλλο μηδέν, αὕτη πάρεστι → What is most common? Hope. For those who have nothing else, that is always there.
compertē: adv., v. comperio.
compertē (compertus), de bonne source : Gell. 1, 22, 9