But, when we consider the ancient European civilisations and compare them with our own, we realize that, in spite of all the circumstances which we have enumerated and briefly considered as factors stimulating the spirit of inquiry and making for progress of their intellectual tradition, and in spite of their brilliant and in some respects unapproachable achievements, they were nevertheless radically incapable of continued progress. Greek civilisation certainly progressed at a marvellous rate for some centuries; yet there is every reason to believe that it bore within itself the inevitable causes of its ultimate decay or stagnation. And, when we consider Roman civilisation, we see that, through all the long centuries of the greatness of Rome, it was essentially unprogressive. There was no continued evolution of the national mind and character. Save in respect to the single province of law, Roman civilisation, when it entered upon the period of its decay, had not appreciably progressed in any essential respects beyond the stage reached more than a thousand years earlier. Rome was in fact less truly a nation in its later than in its earlier age. It had superficially imitated rather more of Greek culture and it had incorporated a number of bizarre elements from the many peoples which had been brought under the sway of the Roman sceptre; but neither in religion, nor in philosophy, nor art, nor science, nor in any of the practical modes of controlling the forces of nature, had it made any substantial gains; and its social organisation tended more and more to the type of a centralised irresponsible bureaucracy[145]. On the other hand, it cannot be denied that in the last thousand years the nations of Western Europe have made immense progress; nor that this progress has been accelerating from century to century in a way which seemed to reach a climax in the wonderful century just closed; though there appears good prospect of continued progress and perhaps of continued acceleration throughout the century to come and perhaps for many more. What then is the cause of this great difference between the civilisation of Western Europe and all preceding civilisations? The difference is, I think, essentially due to difference of social organisation. As argued in a previous chapter, social organisation was of less influence in the earlier ages, but has assumed a constantly increasing importance throughout the evolution of civilisation; and it is now predominant over all other conditions. We must, then, first define this difference of social organisation; secondly, we must show how it makes for progress; and thirdly, conjecture how the social organisation of Western Europe, so favourable to the continued development of nations, has been brought about.