Dear Dr. Medaille,

Yes: we all need the virtues, beyond Prudence Only.  So I have recently 
come to realize, as for example in The Bourgeois Virtues: Ethics for an 
Age of Commerce (2006).  Economists by instinct, and after Bentham, try 
always to get along on Prudence Only.  Smith would not have approved!

Sincerely,

Deirdre McCloskey