Chapter 19 — Part II: The Sacraments — Penance
Section 143. For to satisfy, as some define it, is to pay due honour to God: and this, it is evident, no person can do, who is not entirely resolved to avoid sin. Again, to satisfy is to cut off all occasions of sin, and to close every avenue against its suggestions. In accordance with this idea of satisfaction some have defined it as a cleansing, which effaces whatever defilement may remain in the soul from the stains of sin, and which exempts us from the temporal chastisements due to sin.