Note 95 — Chapter IX · SUMMARY OF THE REASONS FOR ADOPTING THE SUBJOINED DEFINITION OF THE MEASURE OF VALUE.
Reading edition
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.