I started by saying that one of the most fateful errors of our age is the belief that the problem of production has been solved. This illusion, I suggested, is mainly due to our inability to recognize that the modern industrial system, with all its intellectual sophistication, consumes the very basis on which is has been erected. To use the language of the economist, it lives on irreplaceable capital which it cheerfully treats as income.

Small is beautiful: economics as if people mattered (ed. 1975)