I suppose there was a time when nobody bothered at all about the shape of the earth, when nobody had even had the idea that the earth could be conceived as having a shape, and similarly it is true that it is only in recent centuries that people have been able to suppose that there was a shape to human history. It is indeed not much more than a century since there was any real emergence from theological assumptions and pure romanticism and accidentalism in these matters. Old Adam Smith it was, probing away at the roots of economics, who set going the construction of ampler propositions. From him spring all those new interpretations which have changed the writing of history from a record of dramatic reigns and wars and crises to an analysis of economic forces. How impossible it would be for anyone now to write that great chapter of Gibbon's in which he sweeps together into one contempt the history of sixty Emperors and six hundred years of time. His note of weariness and futility vanishes directly one's vision penetrates the immediate surface. Those Heraclians and Isaurians and Comneni were not history, a schoolboy nowadays knows that their record is not history, knows them for the mere scum upon the stream. And still to-day we have our great interpretations to make. Ours is a time of guesses, theories and provisional generalizations. Our phase corresponds to the cosmography that was still a little divided between discs and domes and spheres and cosmic eggs; that was still a thousand years from measuring and weighing a planet. For a long time my mind hovered about the stimulating theories of Socialism and particularly about those more systematic forms of Socialist teaching that centre about Karl Marx. He rose quite naturally out of those early economists who saw all the world in terms of production and saving. He was a necessary step for me at least, on the way to understanding. For a time I did so shape the world in my mind that it seemed to me no more than a vast enterprise for the organization and exploitation of labor. For a time I thought human life was essentially a labor problem, that working and controlling work and lending and selling and "speculating" made the essential substance of human life, over which the forms of politics ran as the stripes of a tiger's skin run and bend over its living muscles. I followed my period in thinking that. You will find in Ferrero's "Roman Decline," which was published early in this century, and which waits for you in the library, almost exactly the method of interpretation that was recommending itself to me in 1904 and 1905.