Report, if you have a problem with this page“ The cry for an equality of wages rests, therefore, upon a mistake is an inane wish never to be fulfilled. It is an offspring of that false and superficial radicalism that accepts premises and tries to evade conclusions. Upon the basis of the wages system the value of labouring power is settled like that of every other commodity; and as different kinds of labouring power have different values, or require different quantities of labour for their production, they must fetch different prices in the labour market. To clamour for equal or even equitable retribution on the basis of the wages system is the same as to clamour for freedom on the basis of the slavery system. What you think just or equitable is out of the question. The question is: What is necessary and unavoidable with a given system of production? After what has been said, it will be seen that the value of labouring power is determined by the value of the necessaries required to produce, develop, maintain, and perpetuate the labouring power. ”
Karl Marx
From : Wage-Labour and Capital/Value