Charles R. Van Hise,
Some Economic Aspects of the World War…
“ It is not so many years ago that the American people thought that all of their natural resources would last forever. It was frequently said that the deposits of iron ore, copper and petroleum are inexhaustible. While, before the war, we had developed beyond this simple primitive faith in our bigness, at least so far as scientific men were concerned, we still took it as a matter of course that each year there would be enough of every essential commodity—food, clothing, metals, oil, fuel—to meet without limitation any demands that might be made. ”
