Of Boasting

Of Boasting — St. Thomas Aquinas asks: Whether boasting is opposed to the virtue of truth?; Whether boasting is a mortal sin?.

We must now consider boasting and irony, which are parts of lying according to the Philosopher (Ethic. iv, 7). Under the first head, namely, boasting, there are two points of inquiry:

Article 1: Whether boasting is opposed to the virtue of truth?

The Philosopher says (Ethic. ii, 7; iv, 7), that boasting is opposed to truth.

"Jactantia" [boasting] seems properly to denote the uplifting of self by words: since if a man wishes to throw [jactare] a thing far away, he lifts it up high. And to uplift oneself, properly speaking, is to talk of oneself above oneself [*Or 'tall-talking' as we should say in English]. This happens in two ways. For sometimes a man speaks of himself, not above what he is in himself, but above that which he is esteemed by men to be: and this the Apostle declines to do when he says (2 Cor. 12:6): "I forbear lest any man should think of me above that which he seeth in me, or anything he heareth of me." In another way a man uplifts himself in words, by speaking of himself above that which he is in reality. And since we should judge of things as they are in themselves, rather than as others deem them to be, it follows that boasting denotes more properly the uplifting of self above what one is in oneself, than the uplifting of self above what others think of one: although in either case it may be called boasting. Hence boasting properly so called is opposed to truth by way of excess.

Article 2: Whether boasting is a mortal sin?

Boasting arises from vainglory, according to Gregory (Moral. xxxi, 17). Now vainglory is not always a mortal sin, but is sometimes a venial sin which only the very perfect avoid. For Gregory says (Moral. viii, 30) that "it belongs to the very perfect, by outward deeds so to seek the glory of their author, that they are not inwardly uplifted by the praise awarded them." Therefore boasting is not always a mortal sin.

As stated above (), a mortal sin is one that is contrary to charity. Accordingly boasting may be considered in two ways. First, in itself, as a lie, and thus it is sometimes a mortal, and sometimes a venial sin. It will be a mortal sin when a man boasts of that which is contrary to God's glory---thus it is said in the person of the king of Tyre (Ezech. 28:2): "Thy heart is lifted up, and thou hast said: I am God"---or contrary to the love of our neighbor, as when a man while boasting of himself breaks out into invectives against others, as told of the Pharisee who said (Lk. 18:11): "I am not as the rest of men, extortioners, unjust, adulterers, as also is this publican." Sometimes it is a venial sin, when, to wit, a man boasts of things that are against neither God nor his neighbor. Secondly, it may be considered with regard to its cause, namely, pride, or the desire of gain or of vainglory: and then if it proceeds from pride or from such vainglory as is a mortal sin, then the boasting will also be a mortal sin: otherwise it will be a venial sin. Sometimes, however, a man breaks out into boasting through desire of gain, and for this very reason he would seem to be aiming at the deception and injury of his neighbor: wherefore boasting of this kind is more likely to be a mortal sin. Hence the Philosopher says (Ethic. iv, 7) that "a man who boasts for the sake of gain, is viler than one who boasts for the sake of glory or honor." Yet it is not always a mortal sin because the gain may be such as not to injure another man.