Justice Vs. Power - Chomsky Vs. Foucault

" Contrary to what you think you can't prevent me from believing that these notions of human nature, of justice, of the realization of the essence of the human being, are all notions and concepts which have been found within our civilization, within our type of knowledge and our form of philosophy, and that as a result form part of our class system; and one can't, however regrettable it may be, put forward these notions to describe or justify a fight which should--and shall in principal--overthrow the very fundamentals of our society. This is an extrapolation for which I can't find the historical justification. " --Foucault