The doctrinal teaching of the Roman Catholic Church extends over two millennia and seeks to inform and direct lives at many levels: personal, familial, civic, and institutional. The reach of this teaching extends to law, moral and ethical issues, politics, education, science, and art. No single volume can serve even as a sketch of this teaching, but in the present volume ten internationally renowned scholars address the various dimensions of the Roman Catholic understanding of the human person, especially St. Thomas Aquinas's affirmation of the rational and social nature of man. The authors present a truly multidisciplinary approach to the topic - the contributors include philosophers, psychologists, political scientists, a theologian, and an architect. Special attention is given to the theology and anthropology of Pope John Paul II whose writings vividly condense the searching examination and robust conception of human nature developed over the centuries. Readers are reminded of just how central the Church's teaching has been to Western Civilization in all of its projections and are thus alerted to the conditions likely to preserve or threaten it. The contributors are Hadley Arkes, Jude P. Dougherty, Kevin Flannery, S.J., Robert P. George, Richard Gill, L.C., F. Russell Hittinger, Daniel N. Robinson, Robert Royal, Peter Ryan, S.J., and Carroll William Westfall.