St. Thomas Aquinas

(1225-1274 CE)

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Section A:                                       ETERNAL LAW

(God’s regulative reason; i.e., each thing to its proper end – as designed by God)

 

 DIVINE LAW                                                           NATURAL LAW

(Revealed laws – some of which                                (Man’s participation in Eternal

 cannot be known by “the natural                               Law by means of “the natural light

 light of reason” – e.g., the rules                               of reason” – allowing man to

 governing the sacraments)                                       discern the fundamental moral

                                                                            principles or “rules of right reason”)

 

                                                                            HUMAN LAWS

                                                                            (Positive laws designed by humans

                                                                            to give temporal sanctions for

                                                                            Natural Law, and to serve the

                                                                            common good by reasonable

                                                                            arrangements)

 

Section B:

 THEOLOGICAL VIRTUES:

  1) CHARITY = sharing Divine love with others infused by grace,

  2) HOPE = persistence in right action no excess possible                                 

  3) FAITH = right belief in God’s revelation

 

  INTELLECTUAL VIRTUES:

  4) WISDOM = judging and ordering all truths known by reason,

  5) SCIENCE = valid deductive reasoning no excess possible

  6) UNDERSTANDING = habit of discerning general rules (principles) from particulars

 

 MORAL VIRTUES: known by reason,

  7) JUSTICE = control of actions through reason’s vision of fairness ruled by Golden Mean, excess and defect possible 

  8) PRUDENCE = control of reason by reason

  9) FORTITUDE = control of fear by reason                                   

10) TEMPERANCE = control of passions by reason

 

Section C:

All men are designed so as to share in a common human nature.

Their essences are the same. Thus:

 1)  In so far as man is a CREATURE PER SE, man has an inclination to self-preservation.

 2)  In so far as man is a LIVING BEING, man has an inclination to propagate the species and raise children.

 3)  In so far as man is a RATIONAL BEING, man has an inclination “to know the truth about God” and to live in society”.

 

Thus, man can give a MORAL LAW to himself through reason.

(although this law is ultimately rooted in God’s ETERNAL LAW)

 

 

 

 

 

Last Updated: 10/19/22