ST II-II, q. 110

Of the Vices Opposed to Truth, and First of Lying

We must now consider the vices opposed to truth, and (1) lying: (2) dissimulation or hypocrisy: (3) boasting and the opposite vice. Concerning lying there are four points of inquiry:

(1) Whether lying, as containing falsehood, is always opposed to truth?

(2) Of the species of lying;

(3) Whether lying is always a sin?

(4) Whether it is always a mortal sin?

Articles

  1. a. 1Whether lying is always opposed to truth?
  2. a. 2Whether lies are sufficiently divided into officious, jocose, and mischievous lies?
  3. a. 3Whether every lie is a sin?
  4. a. 4Whether every lie is a mortal sin?

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