Whether prudence is a virtue necessary to man?

❌ Objection 1 : It would seem that prudence is not a virtue necessary to lead a good life. For as art is to things that are made, of which it is the right reason, so is prudence to things that are done, in respect of which we judge of a man's life: for prudence is the right reason about these things, as stated in Ethic. vi, 5. Now art is not necessary in things that are made, save in order that they be made, but not after they have been made. Neither, therefore is prudence necessary to man in order to lead a good life, after he has become virtuous; but perhaps only in order that he may become virtuous.

❌ Objection 2 : Further, "It is by prudence that we are of good counsel," as stated in Ethic. vi, 5. But man can act not only from his own, but also from another's good counsel. Therefore man does not need prudence in order to lead a good life, but it is enough that he follow the counsels of prudent men.

❌ Objection 3 : Further, an intellectual virtue is one by which one always tells the truth, and never a falsehood. But this does not seem to be the case with prudence: for it is not human never to err in taking counsel about what is to be done; since human actions are about things that may be otherwise than they are. Hence it is written (Wis. 9:14): "The thoughts of mortal men are fearful, and our counsels uncertain." Therefore it seems that prudence should not be reckoned an intellectual virtue.