/lit/ - Literature

>>22980457
διὰ + acc. = for/on account of
διὰ τοῦτο = for this (reason) / on account of this
συμφέρει = it helps

Ῥωμαϊστὶ καὶ Ἑλληνιστὶ : the -ιστὶ is a regular adverb-forming ending meaning broadly "in the X way" with X whatever it's in front
just like in Latin, Greek uses an adverb to express the language being spoken, literally "to speak Latinly/Greekly"
ἀσκεῖν = practice/train
μεθερμένευσις = translating
ἐνεργός = active/operative(i.e unlike passive, like reading only)
μὴ ὑποπτεύσωσιν = lest (+ subj.) they suspect
οἱ πολλοὶ = normies / average people
κεκασμένους = this is mostly Homeric, meaning expert in + dat. of what, in this case old languages πάλαι(adv.) γλώσσαις