Doubt II: On prodigality

It is defined by D. Bonavent. in the opusc. Declaratorio terminorum Theologiae: Prodigality is superfluity, which gives what ought not to be given. Hence it recedes to the other extreme from the mean of Liberality, and is less opposed to it than avarice; for Liberality draws nearer to him who gives too much than to him who gives nothing, or less than is fitting. Second, because the prodigal helps others; but the avaricious man is harmful to all. Third, because prodigality is more easily cured.

It is only a venial sin in its genus. Thus D. Thom. art. 3. But it can be mortal, if he consumes his resources to the ruin of his children, of the needy, of creditors, and of all those to whom he is bound to bring aid, as Tannerus noted disp. 6. quaest. 2. dub. 2. num. 46.

The detriments of Prodigality St. Doctor sets forth admirably on Luke 15, on the parable of the prodigal son.