( 40 )
wages of a given number of men must always be the same. But such wages, according to the postulate with which we commenced, must necessarily be equal to the quantity of labour for which they will exchange. Consequently the value of a given quantity of labour must, under every variety which can take place in the fertility of the soil and the corn wages of labour, be always constant. It is, however, of the greatest importance to remark, that an exact balance of labour, and of profits estimated in labour, so as to yield always a constant quantity, cannot take place in the production of any one commodity or given portion of a commodity; because any one commodity, cr given portion of a commodity, is liable to vary in relation to labour, and such variation will either increase or decrease the amount of the labour and profits united. It is only 'the varying wages of a given number of men bearing, as the terms imply, a constant relation to labour, which, under any changes in the quantity of labour required to produce them, can still continue of the same natural value. And it is precisely this necessary constancy in the natural value of the varying corn wages of labour, which renders the labour which a commodity will command, a standard
