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?
P. πήδησις, ἡ. V. πήδημα, τό.
trembling: P. and V. τρόμος, ὁ (Plato).