Yet it would be as falsely sentimental to set up a golden age as a heightening background for the evils that came with coal as it would be to ignore or gloze over those evils. Economic insecurity, poverty, disease, wars, and blighted childhood are as old as human existence. The world is a better, richer, more vibrant, and thrilling abode since coal came than it was before. The indictment of our coal age can be justly based, not upon what it has destroyed, but rather upon what it has missed,--upon its spiritually blind, its bungling and inadequate use of a gift more magnificent than any allotted to man since grain was first sown to the harvest and ground at a mill. An indictment that involves all mankind is hardly an indictment at all. It is rather a confession of our common human limitations, a recognition of the tragic circumstances of our spiritual growth. It will be answered when we as individuals and nations and groups of nations, set ourselves to turn the wisdom of experience to account in building a civilization worthy of a world that moves through infinite space with the sun and the marching stars.
The making of all the coal in the earth began when the sun hurled the earth into its orbit. Before there were vertebrates in the sea, or animals, or plants of any kind on land--fully one hundred and fifty million years ago--low foldings and depressions appeared on the earth where the Appalachian Mountains now are. Following the lines of what has become the Atlantic, vast ridges appeared. Ages later swamp forests grew in the intervening valleys, bearing and shedding the spores and thick, somber leaves still traceable in the lower carboniferous strata. In that time, a shallow sea covered what is now the Mississippi Valley in whose sludgy shoals more swamp forests grew. Along the inland seas and ocean beaches of Europe and Asia, the tides, the winds, and rains slowly spread the clay for still other swamp forests. When the lush plant life of the carboniferous age came out of the marshy ooze, it spread along the edges of the land, crept up the long estuaries between the rising and sinking hills and on into the landlocked seas. The rocks beneath and about these carboniferous forests rose and sank age through age, cycle through cycle. When they sank slowly, tangled morasses formed; when they sank rapidly, the inrushing water killed the plants and buried them under a covering of silt. When the rocky strata rose again, the swamp forests crept back to their old places, and again bore and shed their fernlike leaves, their spores and great scarred trunks upon the oozy bottom now scores or hundreds of feet above the level on which their ancestors had stood ages before.