Take, indeed, a civilized country. The forests which once covered it have been cleared, the marshes drained, the climate improved. It has been made habitable. The soil, which bore formerly only a coarse vegetation, is covered to-day with rich harvests. The rock-walls in the valleys are laid out in terraces and covered with vines. The wild plants, which yielded nought but acrid berries, or uneatable roots, have been transformed by generations of culture into succulent vegetables or trees covered with delicious fruits. Thousands of highways and railroads furrow the earth, and pierce the mountains. The shriek of the engine is heard in the wild gorges of the Alps, the Caucasus, and the Himalayas. The rivers have been made navigable; the coasts, carefully surveyed, are easy of access; artificial harbours, laboriously dug out and protected against the fury of the sea, afford shelter to the ships. Deep shafts have been sunk in the rocks; labyrinths of underground galleries have been dug out where coal may be raised or minerals extracted. At the crossings of the highways great cities have sprung up, and within their borders all the treasures of industry, science, and art have been accumulated.
Whole generations, that lived and died in misery, oppressed and ill-treated by their masters, and worn out by toil, have handed on this immense inheritance to our century.
For thousands of years millions of men have laboured to clear the forests, to drain the marshes, and to open up highways by land and water. Every rood of soil we cultivate in Europe has been watered by the sweat of several races of men. Every acre has its story of enforced labour, of intolerable toil, of the people's sufferings. Every mile of railway, every yard of tunnel, has received its share of human blood.
The shafts of the mine still bear on their rocky walls the marks made by the pick of the workman who toiled to excavate them. The space between each prop in the underground galleries might be marked as a miner's grave; and who can tell what each of these graves has cost, in tears, in privations, in unspeakable wretchedness to the family who depended on the scanty wage of the worker cut off in his prime by fire-damp, rock-fall, or flood?
The cities, bound together by railroads and waterways, are organisms which have lived through centuries. Dig beneath them and you find, one above another, the foundations of streets, of houses, of theatres, of public buildings. Search into their history and you will see how the civilization of the town, its industry, its special characteristics, have slowly grown and ripened through the co-operation of generations of its inhabitants before it could become what it is to-day. And even to-day, the value of each dwelling, factory, and warehouse, which has been created by the accumulated labour of the millions of workers, now dead and buried, is only maintained by the very presence and labour of legions of the men who now inhabit that special corner of the globe. Each of the atoms composing what we call the Wealth of Nations owes its value to the fact that it is a part of the great whole. What would a London dockyard or a great Paris warehouse be if they were not situated in these great centres of international commerce? What would become of our mines, our factories, our workshops, and our railways, without the immense quantities of merchandise transported every day by sea and land?
Millions of human beings have laboured to create this civilization on which we pride ourselves to-day. Other millions, scattered through the globe, labour to maintain it. Without them nothing would be left in fifty years but ruins.
There is not even a thought, or an invention, which is not common property, born of the past and the present. Thousands of inventors, known and unknown, who have died in poverty, have co-operated in the invention of each of these machines which embody the genius of man.
Thousands of writers, of poets, of scholars, have laboured to increase knowledge, to dissipate error, and to create that atmosphere of scientific thought, without which the marvels of our century could never have appeared. And these thousands of philosophers, of poets, of scholars, of inventors, have themselves been supported by the labour of past centuries. They have been upheld and nourished through life, both physically and mentally, by legions of workers and craftsmen of all sorts. They have drawn their motive force from the environment.
The genius of a Séguin, a Mayer, a Grove, has certainly done more to launch industry in new directions than all the capitalists in the world. But men of genius are themselves the children of industry as well as of science. Not until thousands of steam-engines had been working for years before all eyes, constantly transforming heat into dynamic force, and this force into sound, light, and electricity, could the insight of genius proclaim the mechanical origin and the unity of the physical forces. And if we, children of the nineteenth century, have at last grasped this idea, if we know now how to apply it, it is again because daily experience has prepared the way. The thinkers of the eighteenth century saw and declared it, but the idea remained undeveloped, because the eighteenth century had not grown up like ours, side by side with the steam-engine. Imagine the decades that might have passed while we remained in ignorance of this law, which has revolutionized modern industry, had Watt not found at Soho skilled workmen to embody his ideas in metal, bringing all the parts of his engine to perfection, so that steam, pent in a complete mechanism, and rendered more docile than a horse, more manageable than water, became at last the very soul of modern industry.