The Revolutionist's Handbook and Pocket Companion by George Bernard Shaw

It may be said that though the wild beast breaks out in Man and casts him back momentarily into barbarism under the excitement of war and crime, yet his normal life is higher than the normal life of his forefathers. This view is very acceptable to Englishmen, who always lean sincerely to virtue's side as long as it costs them nothing either in money or in thought. They feel deeply the injustice of foreigners, who allow them no credit for this conditional highmindedness. But there is no reason to suppose that our ancestors were less capable of it than we are. To all such claims for the existence of a progressive moral evolution operating visibly from grandfather to grandson, there is the conclusive reply that a thousand years of such evolution would have produced enormous social changes, of which the historical evidence would be overwhelming. But not Macaulay himself, the most confident of Whig meliorists, can produce any such evidence that will bear cross-examination.

Compare our conduct and our codes with those mentioned contemporarily in such ancient scriptures and classics as have come down to us, and you will find no jot of ground for the belief that any moral progress whatever has been made in historic time, in spite of all the romantic attempts of historians to reconstruct the past on that assumption.