Let us, however, drop the expert methods and handle this question rather more rudely. Do we want London rebuilt? If we do, is there, after all, any reason why we should rebuild it on its present site? London is where it is for reasons that have long ceased to be valid; it grew there, it has accumulated associations, an immense tradition, that this constant mucking about of builders and architects is destroying almost as effectually as removal to a new site. The old sort of rebuilding was a natural and picturesque process, house by house, and street by street, a thing as pleasing and almost as natural in effect as the spreading and interlacing of trees; as this new building, this clearance of areas, the piercing of avenues, becomes more comprehensive, it becomes less reasonable. If we can do such big things we may surely attempt bigger things, so that whether we want to plan a new capital or preserve the old, it comes at last to the same thing, that it is unreasonable to be constantly pulling down the London we have and putting it up again. Let us drain away our heavy traffic into tunnels, set up that clearinghouse plan, and control the growth at the periphery, which is still so witless and ugly, and, save for the manifest tidying and preserving that is needed, begin to leave the central parts of London, which are extremely interesting even where they are not quite beautiful, in peace. THE SO-CALLED SCIENCE OF SOCIOLOGY It has long been generally recognised that there are two quite divergent ways of attacking sociological and economic questions, one that is called scientific and one that is not, and I claim no particular virtue in the recognition of that; but I do claim a certain freshness in my analysis of this difference, and it is to that analysis that your attention is now called. When I claim freshness I do not make, you understand, any claim to original discovery. What I have to say, and have been saying for some time, is also more or less, and with certain differences, to be found in the thought of Professor Bosanquet, for example, in Alfred Sidgwick’s _Use of Words in Reasoning_, in Sigwart’s _Logic_, in contemporary American metaphysical speculation. I am only one incidental voice speaking in a general movement of thought. My trend of thought leads me to deny that sociology is a science, or only a science in the same loose sense that modern history is a science, and to throw doubt upon the value of sociology that follows too closely what is called the scientific method. The drift of my argument is to dispute not only that sociology is a science, but also to deny that Herbert Spencer and Comte are to be exalted as the founders of a new and fruitful system of human inquiry. I find myself forced to depreciate these modern idols, and to reinstate the Greek social philosophers in their vacant niches, to ask you rather to go to Plato for the proper method, the proper way of thinking sociologically.