have not ceased to be pluralistic about many things. But I believe that at particular junctures in history, humanity faces particular challenges. I am not now pluralistic about whether we should try to save our species from extinction, nor about the relative importance of that task in comparison with most of what goes on in value-free research universities. These are the epitome of the late modernism from which radical empiricism, neo-naturalism, process metaphysics, and, above all, Whiteheadian cosmology rescued me.