The distinction between human nature perfectionism and objective goods perfectionism helps us approach an important question in value theory. Must perfectionists be monists, holding that there is at bottom only one form of life that is best for all human beings; or can they hold that there exists a plurality of equally good forms of life for human beings? The question is important, since it is very plausible to think that the best life for one human being may differ from the best life for another.