Now, while the workings of historical criticism in these two spheres of sacred and uninspired history are essentially manifestations of the same spirit, yet their methods are so different, the canons of evidence so entirely separate, and the motives in each case so unconnected, that it will be necessary for a clear estimation of the progress of Greek thought, that we should consider these two questions entirely apart from one another. I shall then in both cases take the succession of writers in their chronological order as representing the rational order—not that the succession of time is always the succession of ideas, or that dialectics moves ever in the straight line in which Hegel conceives its advance. In Greek thought, as elsewhere, there are periods of stagnation and apparent retrogression, yet their intellectual development, not merely in the question of historical criticism, but in their art, their poetry and their philosophy, seems so essentially normal, so free from all disturbing external influences, so peculiarly rational, that in following in the footsteps of time we shall really be progressing in the order sanctioned by reason. II AT an early period in their intellectual development the Greeks reached that critical point in the history of every civilised nation, when speculative invades the domain of revealed truth, when the spiritual ideas of the people can no longer be satisfied by the lower, material conceptions of their inspired writers, and when men find it impossible to pour the new wine of free thought into the old bottles of a narrow and a trammelling creed. From their Aryan ancestors they had received the fatal legacy of a mythology stained with immoral and monstrous stories which strove to hide the rational order of nature in a chaos of miracles, and to mar by imputed wickedness the perfection of God’s nature—a very shirt of Nessos in which the Heracles of rationalism barely escaped annihilation. Now while undoubtedly the speculations of Thales, and the alluring analogies of law and order afforded by physical science, were most important forces in encouraging the rise of the spirit of scepticism, yet it was on its ethical side that the Greek mythology was chiefly open to attack. It is difficult to shake the popular belief in miracles, but no man will admit sin and immorality as attributes of the Ideal he worships; so the first symptoms of a new order of thought are shown in the passionate outcries of Xenophanes and Heraclitos against the evil things said by Homer of the sons of God; and in the story told of Pythagoras, how that he saw tortured in Hell the ‘two founders of Greek theology,’ we can recognise the rise of the Aufklärung as clearly as we see the Reformation foreshadowed in the _Inferno_ of Dante.