cf. Cudworth, Int. Syst. iv. 6, and remarks there on Cic., Acad Quæst. i. 6. Arist. (Metaph. i. 2) says Θεὸς γὰρ δοκει τὸ αἴτιον πασιν εἰναι καὶ ἀρχή τις, but does this refer only to form?