Summa Theologica (Prima Secundae)

"Since happiness is the perfect and sufficient good, it excludes every evil and fulfils every desire."

"Human acts are those which proceed from deliberate will."

With unmatched clarity and depth, Summa Theologica (Prima Secundae) presents Thomas Aquinas's most influential treatment of moral philosophy and ethics. Here, Aquinas confronts the fundamental questions of human life: the nature of happiness, the structure of moral action, the formation of virtue and vice, and the role of law and gra...