Immorality in “Treatise of Law” by Thomas Aquinas Thomas Aquinas’s “Treatise of Law” describes the ways in which humans structure their societies, specifically in terms of law. According to his conclusions, there are four classifications of law that humans obey in a top-down system; the eternal law, divine law, natural law, and human law. Humans act in accordance with eternal law, or God’s everlasting plan for the world’s inhabitants, via natural law. Since all laws are derived from God, Aquinas claims that every law is directed towards a “commonly good” society, or society driven to achieve overall happiness. Therefore, man’s response to laws, even if they are individually immoral, serve as these contributions towards common good. Depravity
