 The concept of a virtue is the concept of something that makes its possessor good: a virtuous person is a morally good, excellent or admirable person who acts and feels as she should. These are commonly accepted truisms. But it is equally common, in relation to particular (putative) examples of virtues to give these truisms up. We may say of someone that he is generous or honest “to a fault”. It is commonly asserted that someone’s compassion might lead them to act wrongly, to tell a lie they should not have told, for example, in their desire to prevent someone else’s hurt feelings. It is also said that courage, in a desperado, enables him to do far more wicked things than he would have been able to do if he were timid. So it would appear that generosity, honesty, compassion and courage despite being virtues, are sometimes faults. Someone who is generous, honest, compassionate, and courageous might not be a morally good person—or, if it is still held to be a truism that they are, then morally good people may be led by what makes them morally good to act wrongly! How have we arrived at such an odd conclusion?