The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.
Karl Marx...it is all the more clear what we have to accomplish at present: I am referring to ruthless criticism of all that exists, ruthless both in the sense of not being afraid of the results it arrives at and in the sense of being just as little afraid of conflict with the powers that be.
Karl MarxSurplus-value and the rate of surplus-value are... the invisible essence to be investigated, whereas the rate of profit and hence the form of surplus-value as profit are visible surface phenomena
Karl Marx