According to an ancient and still popular view -- sometimes known as 'eudaimonism' -- a person's well-being, or quality of life, is ultimately determined by his or her level of happiness. According to this view, the happier a person is, the better off he is. The doctrine is controversial in part because the nature of happiness is controversial. In What Is This Thing Called Happiness? Fred Feldman presents a study of the nature and value of happiness. Part One contains critical discussions of the main philosophical and psychological theories of happiness. Feldman presents arguments...