maintain by argument
From LSJ
οὐ παντός πλεῖν ἐς Κόρινθον → it's not for every man to make a journey to Corinth, not everyone can afford a trip to Corinth
English > Greek (Woodhouse Extra)
ἰσχυρίζεσθαι, διισχυρίζεσθαι, διαμάχεσθαι
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