In the long run, these ways of reducing our use of exhaustible resources and our contribution to pollution also save us money, and this can be used to meet human needs that are more urgent than our comfort. (religion-online.org)
Solow, R. M. and F. Y. Wan (1976): «Extraction costs in the theory of exhaustible resources,» Bell Journal of Economics, 359 - 370. (mpra.ub.uni-muenchen.de)
As former French President Francois Hollande once said, «The time is past when humankind thought it could selfishly draw on exhaustible resources. (acespace.org)