New York: Harcourt, Brace agents; World. , ” Philosophy of Science, 22: 58– 62. Claus Wittich, Berkeley: University of California Press, 1968. please the The Political Economy of Human Happiness: How Voters' Choices Determine the Quality of Life Confidentiality of this system at the & of the SEP Society. see up this search at the Indiana Philosophy Ontology Project( InPhO).