Whether inconstancy is a vice contained under prudence?

❌ Objection 1 : It would seem that inconstancy is not a vice contained under imprudence. For inconstancy consists seemingly in a lack of perseverance in matters of difficulty. But perseverance in difficult matters belongs to fortitude. Therefore inconstancy is opposed to fortitude rather than to prudence.

❌ Objection 2 : Further, it is written (James 3:16): "Where jealousy [Douay: 'envy'] and contention are, there are inconstancy and every evil work." But jealousy pertains to envy. Therefore inconstancy pertains not to imprudence but to envy.

❌ Objection 3 : Further, a man would seem to be inconstant who fails to persevere in what he has proposed to do. Now this is a mark of "incontinency" in pleasurable matters, and of "effeminacy" or "squeamishness" in unpleasant matters, according to Ethic. vii, 1. Therefore inconstancy does not pertain to imprudence.