This document discusses different concepts related to morality and law. It defines law as an ordinance that exists for the common good, affirmed by legitimate authority. There are different types of law - eternal law from God, natural law written on the human heart, revealed law in scripture, and positive law made by authorities. For a civil law to be just, it must seek the common good, reflect equality, and align with natural law. The document also discusses degrees of morality based on act, intention, and circumstance. It introduces the principle of double effect to determine right action when good and bad results occur. Finally, it contrasts virtue-based ethics which judges actions as objectively right or wrong, versus moral relativism in systems like situation