The Subtext of Pluralism

It's almost impossible to make a case for the fact that our cultures aren't all aiming for very similar ends. Human beings seem to generally want very similar things, we've just found different creative ways to get there. The true significance of what he's saying here is that there's no way you can use rationality to arrive at some super culture that's better than all the other cultures out there. Ad the will expand on this a lot more.