But in the progress of cultivation, the corn wages of labour do not continue the same, and corn must consequently be liable to great variation of value, both on account of temporary variations in the state of the supply compared with labour, and on account of the more permanent state of the demand and supply of corn compared with labour, owing to the increasing difficulty of production.

It may be laid down, however, as a general proposition, liable to no exception, that when the value of any produce can be resolved into labour and profits, then as the proportion of such produce which goes to labour increases, the proportion which goes to profits must decrease in the same degree, and as the proportion which goes to labour decreases, the proportion which goes to profits must increase in the same degree.[H]

Thus if ¾ of the produce, whatever that produce may be, go to labour, ¼ will remain for profits; if ⅚ go to labour, ⅙ will remain for profits; and if ½ only go to labour, ½ will remain for profits.

In reference to corn or commodities in general, compared with each other at different periods in the progress of cultivation, it is obvious that neither an increase in the quantity of labour required to produce them, nor an increase in the quantity of produce awarded to the labourer, can ever determine the proportion of the whole produce which goes to labour and affect profits accordingly; because if the quantity of labour required to produce them increases, the effect of this upon profits may be totally destroyed by a diminution at the same time of the quantity of produce awarded to the labourer; or if a larger quantity of produce be awarded to the labourer, it may be only in consequence of a smaller quantity of labour being necessary to obtain the same produce, in which case profits may remain undiminished, or even rise, at the same time that corn wages rise.

But if instead of referring to commodities generally, we refer to the variable quantity of produce which, under different circumstances, forms the wages of a given number of labourers, we shall find that the variable quantity of labour required to obtain this produce will always exactly agree with the proportion of the whole produce which goes to labour; because, however variable may be the amount of this produce, it will be divided into a number of parts equal to the number of labourers which it will command, and as the first set of labourers who produced these wages may be considered as having been paid at the same rate as the second set, whose labour the produce commands; it is obvious that if to obtain the produce which commands ten labourers, 6, 7, 8, or 9 labourers be required, the proportion of the produce which goes to labour, in these different cases, will be 6/10, 7/10, 8/10, or 9/10, leaving 4/10, 3/10, 2/10, or 1/10, for profits.

It is impossible to refer what is proposed as a standard to any other measure, because, in that case, the other measure would be the standard. But if it can be shown, that any object, the value of which is composed of two elements, is of such a nature that while the value of one of these elements increases, the value of the other decreases exactly in the same degree, such object must be of a constant value. If the values of two variable quantities, X and Y, be equal to the constant value A, it follows that, in all the variations to which X and Y are subject, whatever value X gains must be lost by Y, and whatever value Y gains must be lost by X. The converse of this proposition must also be true, that is, if the value of any object be made up of the variable values of two other objects, and it can be shown that, from the nature of these two objects, whatever increase of value one of them gains, must necessarily be lost by the other, and vice versâ, it follows that the value of the object, to which the two others are equal, must be constant. Now it has appeared that the variable values of the labour and of the profits which compose the value of the variable quantity of corn awarded in wages to a given number of labourers, must necessarily be such, that, as the quantity of labour required to produce them increases, either from difficulty of production or from the greater quantity of produce awarded to the labourer, all the value thus gained by labour is lost by profits; and as the quantity of labour required to produce them is diminished, either by facility of production or the small quantity of produce awarded to the labourer, all the value which is gained by profits is lost by labour. Consequently, the value of the variable quantity of produce which, under different circumstances, forms the wages of a given number of men, being composed of the values of the two elements, labour and profits, varying as above described, must be constant, and may therefore, with propriety, be proposed as a standard measure.

I have entered at some length into the details which show the necessary constancy of the value of labour, on account of its great importance; but, in reality, it follows directly from the manner in which the natural value of commodities and of wages is estimated, that when the labourer earns a greater or a smaller quantity of money or necessaries, it is not the value of labour which varies, but, as Adam Smith says, “it is the goods which are cheap in the one case and dear in the other.”

If labour alone, without any capital, were employed in procuring the fruits of the earth, the greater facility of procuring one sort of them compared with another, would not, it is acknowledged, alter the value of labour, or the exchangeable value of the whole produce obtained by a given quantity of exertion. We should, without hesitation, allow that the difference was in the cheapness or dearness of the produce, not of the labour.

In the same manner it will follow, that when capital and profits enter into the computation of value, and the demand for labour varies, the high or low reward of labour estimated in produce, implies a change in the value of the produce, not a change in the value of the labour.

If the increased reward of the labourer takes place without an increase of produce, this cannot happen without a fall of profits, as it is a self-evident truth, that given the quantity of the produce to be divided between labour and profits, the greater the portion of it which goes to labour the less will be left for profits. What then will be the result? It will appear that the value of the produce has fallen, and the value of wages, or of labour, will have remained the same. To obtain any given portion of the produce the same quantity of labour is necessary as before, but profits being diminished, the value of the produce is decreased; while this diminution of profits in reference to the value of wages is just counterbalanced by the increased quantity of labour necessary to procure the increased produce awarded to the labourer, leaving the value of labour the same as before.