1811124. What is forbidden by the eighth commandment?

523. What is forbidden by the eighth commandment? The eighth commandment forbids: false witness, perjury, and lying, the gravity of which is measured by the truth it deforms, the circumstances, the intentions of the one who lies, and the harm suffered by its victims; rash judgment, slander, defamation and calumny which diminish or destroy the good reputation and honor to which every person has a right; flattery, adulation, or complaisance, especially if directed to serious sins or toward the achievement of illicit advantages. A sin committed against truth demands reparation if it has caused harm to others. Further reading: CCC 2475-2487, 2507-2509 524. What is required by the eighth commandment? The eighth commandment requires respect for the truth accompanied by the discretion of charity in the field of communication ​and the imparting of information​, ​​​​​​where the personal and common good, the protection of privacy and the danger of scandal must all be taken into account; in respecting professional secrets​ which must be kept, save in exceptional cases for grave and proportionate reasons; and also in respecting confidences ​given under the seal of secrecy.​​​​​​ Further reading: CCC 2488-2492, 2510-2511