Chapter 19 — Part II: The Sacraments — Penance
Section 56. Names Of Sorrow For Sin — To signify the intensity of this sorrow the name contrition has rightly been given to the detestation of sin of which we speak. The word means the breaking of an object into small parts by means of a stone or some harder substance; and here it is used metaphorically, to signify that our hearts, hardened by pride, are beaten and broken by penance. Hence no-other sorrow, not even that which is felt for the death of parents, or children, or for any other calamity, is called contrition. The word is exclusively employed to express the sorrow with which we are overwhelmed by the forfeiture of the grace of God and of our own innocence.