“alternate of days,” because they may not both be seen on the same day? It is obvious that by this you mean “yesterday” and “to‐day.” But what does this mean, in the name of those same Dioscuri? Let me apply it to some natural object, so that I may not say anything empty and senseless. But no such object could one find, however carefully one might search for it. For the theory that some have supposed to be held by the theogonists, that the two hemispheres of the universe are meant, has no meaning. For how one could call each one of the hemispheres “alternate of days” is not easy to imagine, since the increase of their light in each separate day is imperceptible. But now let us consider a question on which some may think that I am innovating. We say correctly that those persons for whom the time of the sun’s course above the earth is the same in one and the same month share the same day. Consider therefore whether the expression “alternate of days” cannot be applied both to the tropics and the other, the polar, circles. But some one will object that it does not apply equally to both. For though the former are always visible, and both of them are visible at once to those who inhabit that part of the earth where shadows are cast in an opposite direction,(715) yet in the case of the latter those who see the one do not see the other.) [D] Ἀλλ᾽ ἵνα μὴ πλείω περὶ τῶν αὐτῶν λέγων διατρίβω, τὰς τροπὰς ἐργαζόμενος, ὥσπερ ἴσμεν, πατὴρ ὡρῶν ἐστιν, οὐκ ἀπολείπων δὲ οὐδαμῶς τοὺς πόλους Ὠκεανὸς ἂν εἴη, διπλῆς ἡγεμὼν οὐσίας. μῶν ἀσαφές τι καὶ τοῦτο λέγομεν, ἐπείπερ πρὸ ἡμῶν αὐτὸ καὶ Ὅμηρος ἔφη· However, not to dwell too long on the same subject; since he causes the winter and summer solstice, Helios is, as we know, the father of the seasons; and since he never forsakes the poles, he is Oceanus, the lord of two‐fold substance. My meaning here is not obscure, is it, seeing that before my time Homer said the same thing? Ὠκεανοῦ, ὅσπερ γένεσις πάντεσσι τέτυκται,(716) (“Oceanus who is the father of all things”) θνητῶν τε θεῶν θ᾽, ὡς ἂν αὐτὸς φαίη, μακάρων; ἀληθῶς. [148] ἒν γὰρ τῶν πάντων οὐδέν ἐστιν, ὃ μὴ τῆς Ὠκεανοῦ πέφυκεν οὐσίας ἔκγονον. ἀλλὰ τί τοῦτο πρὸς τοὺς πόλους; βούλει σοι φράσω; καίτοι σιωπᾶσθαι κρεῖσσον ἦν· εἰρήσεται δὲ ὅμως. (yes, for mortals and for the blessed gods too, as he himself would say; and what he says is true. For there is no single thing in the whole of existence that is not the offspring of the substance of Oceanus. But what has that to do with the poles? Shall I tell you? It were better indeed to keep silence(717); but for all that I will speak.)