Like a child endlessly asking, we humans, throughout history, have been continually demanding what we desire from nature. We enjoy the comfort and beauty of our furniture, yet we never bother to think about the serious soil erosion caused by deforestation. We take it for granted that we must warm ourselves in winter times, yet we seldom realize the burning away of precious natural resources.We appreciate all the prosperity from the development of modern industry, yet few would give the slightest consideration to the global air and water pollution caused by industrial wastes. Our ruthless exploitation has permanently impaired our mother earth.As we tragically learned from last summer's floods. We cannot continue our carelessness. Finally, standing here at the threshold of the 21st century, we cannot help thinking of our posterity. Nature is not only the mother of the present generation, but
