I began reading Plato's Euthyphro yesterday. One of the first sentences runs like this:
'οὔτοι δὴ Ἀθηναῖοί γε, ὦ Εὐθύφρων, δίκην αὐτὴν καλοῦσιν ἀλλὰ γραφήν.'
(Our Athenians, Euthyphro, do not call it an action, but an indictment)
No major difficulties here, except why no definite article before Ἀθηναῖοί? Όι Ἀθηναῖοί...καλοῦσιν etcetera. Isn't that what you would expect when a noun denotes a whole class?