"0 ON THE NATURE If value, however, denotes merely a relation, this proposition cannot be true. We may ask, to what would this commodity bear an invariable value? What is the correlative? Would it bear the same value to all other commodities? It might do so, it is true, but certainly not in consequence of being produced by an unvarying quantity of labour: for while the labour, in this instance, remained a fixed quantity, yet if the labour in other commodities were increased or diminished, the relations of value between this one commodity, and all others, would, on Mr. Ricardos own principle, be instantly altered. If corn, for example, always required precisely the same quantity of labour to produce it, but all other commodities whatever came to be remarked, that notwithstanding the suppression of the sentence above cited, he retains another but slightly different in expression. *¢ That commodity,” says he (chap. xx, on Value and Riches), <* is alone invariable, which at all times requires the same sacrifice of toil and labour to produce it.”