“I take criticism so seriously as to believe that, even in the midst of a battle in which one is unmistakably on one side against another, there should be criticism, because there must be critical consciousness if there are to be issues, problems, values, even lives to be fought for... Criticism must think of itself as life-enhancing and constitutively opposed to every form of tyranny, domination, and abuse; its social goals are noncoercive knowledge produced in the interests of human freedom.”