31. It is not quite easy for us to realise that, in the eyes of his contemporaries, and for long after, Anaximenes was a much more important figure than Anaximander. And yet the fact is certain. We shall see that Pythagoras, though he followed Anaximander in his account of the heavenly bodies, was far more indebted to Anaximenes for his general theory of reality (§ 53). We shall see further that when, at a later date, science revived once more in Ionia, it was “the philosophy of Anaximenes” to which it attached itself (§ 122). Anaxagoras adopted many of his most characteristic views (§ 135), and some of them even found their way into the cosmology of the Atomists.[168] Diogenes of Apollonia went back to the central doctrine of Anaximenes, and once more made Air the primary substance, though he also tried to combine it with the theories of Anaxagoras (§ 188). We shall come to all this later on; but it seemed desirable to point out at once that Anaximenes marks the culminating point of the line of thought which started with Thales, and to show how the “philosophy of Anaximenes” came to mean the Milesian doctrine as a whole. This it can only have done because it was really the work of a school, of which Anaximenes was the last distinguished representative, and because his contribution to it was one that completed the system he had inherited from his predecessors. That the theory of rarefaction and condensation was really such a completion of the Milesian system, we have seen already (§ 26), and it need only be added that a clear realisation of this fact will be the best clue at once to the understanding of the Milesian cosmology itself and to that of the systems which followed it. In the main, it is from Anaximenes that they all start. Footnote 168: In particular, the authority of Anaximenes was so great that both Leukippos and Demokritos adhered to his theory of a disc-like earth. Cf. Aet. iii. 10, 3-5 (Περὶ σχήματος γῆς), Ἀναξιμένης τραπεζοειδῆ (τὴν γῆν). Λεύκιππος τυμπανοειδῆ. Δημόκριτος δισκοειδῆ μὲν τῷ πλάτει, κοίλην δὲ τῷ μέσῳ. This, in spite of the fact that the spherical form of the earth was already a commonplace in circles affected by Pythagoreanism. CHAPTER II SCIENCE AND RELIGION [Sidenote: Migrations to the West.] 32. So far we have not met with any trace of direct antagonism between science and popular beliefs, though the views of the Milesian cosmologists were really as inconsistent with the religions of the people as with the mythology of the anthropomorphic poets.[169] Two things hastened the conflict—the shifting of the scene to the West, and the religious revival which swept over Hellas in the sixth century B.C. Footnote 169: For the theological views of Anaximander and Anaximenes, see § 22 and 30.