The foundations of modern Catholic bioethics were laid with the teachings of Christ, especially in the example He set as the Divine Physician and through the parable of the Good Samaritan. The Church thus cared for the sick and built hospitals for two thousand years before adopting a definite bioethical focus. Equally important for Catholic bioethics, especially in clinical practice, was the development of the Ethical and Religious Directives for Catholic Health Care Services. They are based on the Ethical and Religious Directives for Catholic Hospitals, which were first published by the Catholic Hospital Association in 1948, revised in 1955, and revised and adopted by the United States Catholic Conference in 1971. Secular bioethics split from theology and metaphysics in favor of the rationalism and humanism which developed out of Enlightenment thought, whereas Catholic bioethics continued its own development, keeping both its theological and its metaphysical roots.
