95. It is specifically on this ground that I think the meaning of the term Wealth should be confined to material objects; that productive labour should be confined to that labour alone which is directly productive of wealth; and that value, or value in exchange, when no specific object is referred to, should mean value in exchange for the means of production, of which labour, the great instrument of production, is alone the representative.
96. Traité d’Economie Politique, Epitome, vol. ii. p. 506, 4th edit.
97. Epitome, vol. ii. p. 507.
98. C. iv. p. 83.
99. Vol. ii. p. 17. 4th edition.