ἆρά γε λόγον ἔχει δυοῖν ἀρχαῖν, ὑλικῆς τε καὶ δραστικῆς → does it in fact have the function of two principles, the material and the active?
ῆς (ἡ) :ion. c. πλευρά.
only pl., side, ribs, flank.