Alasdair C. MacIntyre - To have understood the polymorphous character of pleasure and happiness...

To have understood the polymorphous character of pleasure and happiness is of course to have rendered those concepts useless for utilitarian purposes; if the prospect of his or her own future pleasure or happiness cannot for reasons which I have suggested provide criteria for solving the problems of action in the case of each individual, it follows that the notion of the greatest happiness of the greatest number is a notion without any clear content at all. It is indeed a pseudo-concept available for a variety of ideological uses, but no more than that.