Moral Philosophy: Ethics, Deontology and Natural Law

This treatise presents a systematic account of moral philosophy by separating ethics, deontology, and natural law and explaining their interrelations. The ethical section treats human happiness, human acts, passions, habits, and virtues, with attention to prudence, temperance, fortitude, and justice. The deontological section develops the concept of duty and conscience, discussing the origin of moral obligation, eternal law, natural law, probabilism, and sanctions. The natural-law section applies these principles to duties concerning worship, the preservation of life, truth-telling, charity, rights, marriage, property, and the state, balancing philosophical argument and theological considerations.