A Topic of Moral Theology

What a lie is

Speech contrary to one's mind; jocose, officious, pernicious lies.

In the index as Lie · Lying · Lies (see Lying) · Dissimulation of truth · Amphibology · Hypocrisy · Simulation · Deception · Complimentary phrases · Equivocation · Fables · False speaking · False testimony · Flattery · Injury · Irony · Jesuits deny that end justifies means · Material and formal · Mental and real restriction · Official · Prudence of the confessor · Restitution · Secret · Slander

In the manuals

Summa of Moral Theology (Summa Theologiae Moralis)

Vol. II, Part Second. On the Precep…, Book Seventh. On the Eight…, Question Second. On Lesion…, Article First. On Lying, nn. 636, 637 & 638 (3 passages — hover a number to read it)

A Manual of Moral Theology for English-Speaking Countries

Vol. I, Bk. VI, Pt. VIII, Chapter IV. Lying, n. 1 — A LIE is defined by St Thomas to be a speech contrary to one’s mind. It is, then, of the essence of a lie that there should be an intention of saying what is false, that there should be a contradiction between the mind a… Read in context →

Compendium of Moral Theology of Fr. John Peter Gury, S.J., with the Notes of Antonio Ballerini, S.J.

Vol. I, Treatise On the Precepts o…, On the Eighth Precept of t…, Ch. I, Article I. On Lying in General, n. 438 — 438. - A lie is speech or signification against the mind, with the will of deceiving. If it is done by nods or by some deed, it is called simulation. Scav. - A threefold genus of lie is distinguished: 1. harmful, by mean… Read in context →

Synopsis of Moral and Pastoral Theology

Vol. III, Contracts, and the Obligat…, On the Virtue of Justice (…, Part I — Chapter II: On Injury, or the Violation of Right, n. 404 — II. On Lying.. 404. Preliminary note. A lie is speech against the mind, expressed by words or by other exterior signs. St. Augustine, De Mendacio, one book; Contra Mendacium, one book; Migne, P. L., XL, 487-548; St. Thomas, 2. 2., q. 1… Read in context →

A Handbook of Moral Theology (Koch–Preuss)

Vol. V, Pt. I, Ch. II, Section 5: The Sin of Lying, nn. ¶1, ¶2, ¶3, ¶4, ¶5, ¶6, ¶7, ¶8, ¶9, ¶10 & ¶11 (11 passages — hover a number to read it)

Manuale Theologiae Moralis

Vol. II, Tr. XI, Sect. I, Q. III, Ch. III, Art. IV, II. On Injuries By Words O…, § 2. On Lying, nn. 166, 167, 168, 169 & 170 (5 passages — hover a number to read it)

Summa Theologiae Moralis

Vol. II, Special Moral Theology: On…, Treatise: On the Cardinal …, Fifth Part: On the Virtues…, Section E: On Truth, Question Three: On Lying, Article I: On Lying Itself, nn. ¶1, 857, 858, 859, 860, 861, 862 & 863 (32 passages — hover a number to read it)

Compendium of Moral Theology

Vol. I, Tr. VI, On the Eighth Precept of t…, Chapter I. On Lying and Mental Restriction, n. 310 — A lie is speech against the mind, or, as St. Augustine says, it is "to say something knowingly otherwise than we think." If it is done by nods or by some deed, it is called simulation, which again is called hypocrisy whe… Read in context →

Christian Theology, Dogmatic and Moral, Volume III: On the Decalogue

Diss. III, Equivocal, Ambiguous, and Amphibologi…, Chapter III — A compendious narration of everything that St. Augustine writes in his Book on Lying, nn. I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII & XIII (13 passages — hover a number to read it)

Palladium Theologicum, Tome V: On the Virtues

Tr. IV, Disputation XIII: On the O…, Sect. V, Friendship, Liberality, Epikeia, and the Opposed V…, Q. II, Doubt I: What a lie is, nn. 1–18 (18 passages)

Tr. IV, Disputation XIII: On the O…, Sect. V, Friendship, Liberality, Epikeia, and the Opposed V…, Q. II, Doubt II: Of how many kinds is a lie, nn. 1–17 (17 passages)

Cases of Conscience for English-Speaking Countries, Volume I

Slater, Cases I, The Eighth Commandment, Case 1. Essence of a Lie, nn. ¶1, ¶2, ¶3, ¶4, ¶5, ¶6, ¶7, ¶8 & ¶9 (9 passages — hover a number to read it)

Moral Philosophy: Ethics, Deontology and Natural Law

Pt. III, Ch. III, Section I. Of the Definition of a Lie, nn. 1, 2 & 3 (3 passages — hover a number to read it)

The Catechism of the Council of Trent (The Roman Catechism)

Pt. III, The Eighth Commandment, n. ¶26 — To deceive by a jocose or officious lie, even though it helps or harms no one, is, notwithstanding, altogether unworthy; for thus the Apostle admonishes us: Putting away lying, speak ye the truth. This practice begets a … Read in context →

A Brief Text-Book of Moral Philosophy

Chapter IV: Our Rights and Duties Towards Our Fellow-men, nn. 153 & ¶293 (2 passages — hover a number to read it)

Treated under the broader heading Lying and Mental Reservation — Wouters, Manual of Moral Theology · McHugh–Callan, Moral Theology · Bucceroni, Institutions of Moral Theology · Vermeersch, Theologia Moralis · Konings, Theologia Moralis · Marc, Institutiones Morales · The Casuist · Spirago · Deshon, Guide — these works do not divide the matter as finely as we do here, so their treatment stands one heading up (ed.)