Prominent if not paramount among world-changing inventions in the history of man is that series of contrivances in locomotion that began with the railway and ended for a century or more with the motor and the patent road. That these contrivances, together with the device of limited liability joint stock companies and the supersession of agricultural labourers by skilled men with ingenious machinery, would necessarily concentrate mankind in cities of unparallelled magnitude and work an entire revolution in human life, became, after the event, a thing so obvious that it is a matter of astonishment it was not more clearly anticipated. Yet that any steps should be taken to anticipate the miseries such a revolution might entail does not appear even to have been suggested; and the idea that the moral prohibitions and sanctions, the privileges and concessions, the conception of property and responsibility, of comfort and beauty, that had rendered the mainly agricultural states of the past prosperous and happy, would fail in the rising torrent of novel opportunities and novel stimulations, never seems to have entered the nineteenth-century mind. That a citizen, kindly and fair in his ordinary life, could as a shareholder become almost murderously greedy; that commercial methods that were reasonable and honourable on the old-fashioned countryside, should on an enlarged scale be deadly and overwhelming; that ancient charity was modern pauperisation, and ancient employment modern sweating; that, in fact, a revision and enlargement of the duties and rights of man had become urgently necessary, were things it could not entertain, nourished as it was on an archaic system of education and profoundly retrospective and legal in all its habits of thought. It was known that the accumulation of men in cities involved unprecedented dangers of pestilence; there was an energetic development of sanitation; but that the diseases of gambling and usury, of luxury and tyranny should become endemic, and produce horrible consequences was beyond the scope of nineteenth-century thought. And so, as if it were some inorganic process, practically unhindered by the creative will of man, the growth of the swarming unhappy cities that mark the twenty-first century accomplished itself. The new society was divided into three main classes. At the summit slumbered the property owner, enormously rich by accident rather than design, potent save for the will and aim, the last _avatar_ of Hamlet in the world. Below was the enormous multitude of workers employed by the gigantic companies that monopolised control; and between these two the dwindling middle class, officials of innumerable sorts, foremen, managers, the medical, legal, artistic, and scholastic classes, and the minor rich, a middle class whose members led a life of insecure luxury and precarious speculation amidst the movements of the great managers.