The historians' history of the world in twenty-five volumes…
“ In some degree by the fact that Leucippus settled in the barbarous north, far away from Athens, which had grown since the Persian wars to be more and more the prytaneion, or central focus of warmth to Hellas, and drew all talent to itself from every quarter; and further, from the fact that the natural science which was dominant in the sixth century and the beginning of the fifth—and was regarded, indeed, as the only legitimate kind of scientific thought—lost its hold on men’s minds towards the middle of the fifth century. ”
