Chapter 31 — Part III: The Decalogue — The Eighth Commandment
Section 40. Lying is also attended with this very great evil that it is an almost incurable disease. For since the guilt of the calumniator cannot be pardoned, unless satisfaction be made to the calumniated person, and since, as we have already observed, this duty is difficult for those who are deterred from its performance by false shame and a foolish idea of dignity, we cannot doubt that he who continues in this sin is destined to the unending punishments of hell. Let no one indulge the hope of obtaining the pardon of his calumnies or detractions, until he has repaired the injury which they have inflicted on the honour or fame of another, whether this was done in a court of justice, or in private and familiar conversation.