ὁ μὴ πεπλευκὼς οὐδὲν ἑόρακεν κακόν → anyone who hasn't sailed has never seen trouble
κρίνω, ἐλέγχω, ἐξελέγχω, ἐτάζω, ἀποσυκάζω, ἐκπειράομαι, διελέγχω, δοκιμάζω, διακωδωνίζω