[40]. In classical Greek literature, no planets but Ἕσπερος and Ἑωσφόρος are mentioned by name at all. Parmenides (or Pythagoras) first identified these as a single planet ([§ 93]). Mercury appears for the first time by name in Tim. 38 e, and the other divine names are given in Epin. 987 b sq., where they are said to be “Syrian.” The Greek names Φαίνων, Φαέθων, Πυρόεις, Φωσφόρος, Στίλβων, may be older, but this cannot be proved.
[41]. The Platonic account of this matter is to be found in the Epinomis, 986 e 9 sqq., and is summed up by the words λάβωμεν δὲ ὡς ὅτιπερ ἂν Ἕλληνες βαρβάρων παραλάβωσι, κάλλιον τοῦτο εἰς τέλος ἀπεργάζονται (987 d 9). The point is well put by Theon (Adrastos), Exp. p. 177, 20 Hiller, who speaks of the Chaldaeans and Egyptians as ἄνευ φυσιολογίας ἀτελεῖς ποιούμενοι τὰς μεθόδους, δέον ἅμα καὶ φυσικῶς περὶ τούτων ἐπισκοπεῖν· ὅπερ οἱ παρὰ τοῖς Ἕλλησιν ἀστρολογήσαντες ἐπειρῶντο ποιεῖν, τὰς παρὰ τούτων λαβόντες ἀρχὰς καὶ τῶν φαινομένων τηρήσεις. The importance of this last passage is that it represents the view taken at Alexandria, where the facts were accurately known.
[42]. Still, the word θεωρία never wholly lost its early associations, and the Greeks always felt that the θεωρητικὸς βίος meant literally “the life of the spectator.” Its special use, and the whole theory of the “three lives,” seem to be of Pythagorean origin. See my edition of Aristotle’s Ethics, p. 19 n.
[43]. These two points are rightly emphasised by Staigmüller, Beiträge zur Gesch. der Naturwissenschaften im klassischen Altertume (Progr. Stuttgart, 1899, p. 8).
[44]. The gnomon was not a sundial, but an upright erected on a flat surface, in the centre of three concentric circles. These were drawn so that the end of the gnomon’s shadow touched the innermost circle at midday on the summer solstice, the intermediate circle at the equinoxes, and the outermost circle at the winter solstice. See Bretschneider, Die Geometrie vor Euklid, p. 60.
[45]. The term κόσμος seems to be Pythagorean in this sense. It was not familiar even at the beginning of the fourth century. Xenophon speaks of “what the sophists call the κόσμος” (Mem. i. 11). For δίκη, see below, §§ 14, 72.
[46]. This phrase originated in the school of Plato. The method of research in use there was for the leader to “propound” (προτείνειν, προβάλλεσθαι) it as a “problem” (πρόβλημα) to find the simplest “hypothesis” (τίνων ὑποτεθέντων) on which it is possible to account for and do justice to all the observed facts (σῴζειν τὰ φαινόμενα). It was in its French form, sauver les apparences, that the phrase acquired the meaning it usually has now.
[48]. Tht. 179 e 4, αὐτοῖς ... τοῖς περὶ τὴν Ἔφεσον. The humorous denial that the Herakleiteans had any disciples (180 b 8, Ποίοις μαθηταῖς, ὦ δαιμόνιε;) implies that this was the normal and recognised relation.
[49]. Soph. 242 d 4, τὸ ... παρ’ ἡμῖν Ἐλεατικὸν ἔθνος. Cf. ib. 216 a 3, ἑταῖρον δὲ τῶν ἀμφὶ Παρμενίδην καὶ Ζήνωνα [ἑταίρων] (where ἑταίρων is probably interpolated, but gives the right sense); 217 a, 1, οἱ περὶ τὸν ἐκεῖ τόπον.