"The Energy Crisis - Why Our World Will Never Again Be the Same". Margaret Mead, "Redbook", 1974, later quoted in Hugh Nash "Progress As If Survival Mattered: A Handbook For A Conserver Society" (p. 166), 1977.
William Stanley Jevons (1866). “The coal question: an enquiry concerning the progress of the Nation, and the probable exhaustion of our coal-mines”, p.144