Rosa Luxemburg,
The Accumulation of Capital
“ Variable capital is in point of fact a growing quantity in all capitalist countries; only in relation to the even more rapid growth of constant capital can it be said to decrease. On the basis of what is actually happening, namely a greater yearly increase of constant capital as against that of variable capital, as well as a growing rate of surplus value, discrepancies must arise between the material composition of the social product and the composition of capital in terms of value. ”
