In this primary entrance of critical doubt into drama we have one of the sociological clues to the whole evolution of Greek thought. It has been truly said that the constant action of the tragic stage, the dramatic putting of arguments and rejoinders, pros and cons--which in turn was a fruit of the actual daily pleadings in the Athenian dikastery--was a manifold stimulus alike to ethical feeling and to intellectual effort, such as no other ancient civilization ever knew. "The appropriate subject-matter of tragedy is pregnant not only with ethical sympathy, but also with ethical debate and speculation," to an extent unapproached in the earlier lyric and gnomic poetry and the literature of aphorism and precept. "In place of unexpanded results, or the mere communication of single-minded sentiment, we have even in Æschylus, the earliest of the great tragedians, a large latitude of dissent and debate--a shifting point of view--a case better or worse--and a divination of the future advent of sovereign and instructed reason. It was through the intermediate stage of tragedy that Grecian literature passed into the Rhetoric, Dialectics, and Ethical speculation which marked the fifth century B.C." [461] This development was indeed autochthonous, save insofar as the germ of the tragic drama may have come from the East in the cult of Dionysos, with its vinous dithyramb: the "Greek intellect" assuredly did wonderful things at Athens, being placed, for a time, in civic conditions peculiarly fitted for the economic evocation of certain forms of genius. But the above-noted developments in Pindar and in Æschylus had been preceded by the great florescence of early Ionian philosophy in the sixth century, a growth which constrains us to look once more to Asia Minor for a vital fructification of the Greek inner life, of a kind that Athenian institutions could not in themselves evoke. For while drama flourished supremely at Athens, science and philosophy grew up elsewhere, centuries before Athens had a philosopher of note; and all the notable beginnings of Hellenic freethought occurred outside of Hellas proper. § 3