Catholic Intellectual Tradition

The concept of Natural Law is an underlying principle of the Catholic Intellectual Tradition:

72. The morality of acts is defined by the relationship of man's freedom with the authentic good. This good is established, as the eternal law, by Divine Wisdom which orders every being towards its end: this eternal law is known both by man's natural reason (hence it is "natural law"), and — in an integral and perfect way — by God's supernatural Revelation (hence it is called "divine law"). Acting is morally good when the choices of freedom are in conformity with man's true good and thus express the voluntary ordering of the person towards his ultimate end: God himself, the supreme good in whom man finds his full and perfect happiness.   VERITATIS SPLENDOR   IOANNES PAULUS PP. II   (Pope St. John Paul II, The Splendor of Truth)