Philosophers and psychologists have been hard at work trying to unlock the mysteries of our characters. Unfortunately, their answers have been all over the map. According to one position, every single person has all of the moral virtues, such as modesty and compassion, although to varying degrees. Yet according to another position, no one has any character traits at all since they are simply illusions and do not exist. Hence not one person is honest or compassionate or courageous. And between these extremes, there are plenty of intermediate views.
Christian B. Miller argues that not one...