What is "the good life"? How can it best be achieved? The attention of the 1998 winner of the Nobel Prize in Economics, Amartya Sen, to the human person and to the importance of realizing the good life has caused him to be described by one theologian as "the conscience of economics". Known as the capabilities approach, his proposal, a now integral part of the United Nations Human Development Reports' measurement of poverty, seems to ally itself with "the goal of rescuing peoples, first and foremost, from hunger, deprivation, endemic diseases and illiteracy" (Caritas in Veritate, 21), while not limiting itself to the topic of material underdevelopment but addressing the progress of society as a whole. However, a work engaging his thought with that of Catholic social doctrine has as yet been unwritten. This volume, therefore, seeks to fill that lacuna by first explaining and presenting Sen's capabilities approach in a manner accessible to both amateur theologians and amateur economists; a simple yet thorough explanation of its basic aims and method introduce the reader into this manner of thinking about the social life. From the viewpoint of that integral human development, which is at the heart of both Populorum Progressio and Caritas in Veritate, his positive practical intuitions are then illuminated while the need for a more solid theoretical basis to ensure the good life that is truly the most human becomes more apparent. With the contributions of American and European theologians and economists, a family capabilities approach, overcoming his methodological individualism and focusing upon the family, civil society, and the principle of subsidiarity, proposes key concepts in the elaboration of "the good life" for all.