Full Idea
When one moral requirement has overriden another in a dilemma, there is still a 'remainder', so that regret, or the recognition of some new requirement, are still appropriate.
Gist of Idea
After a moral dilemma is resolved there is still a 'remainder', requiring (say) regret
Source
Rosalind Hursthouse (On Virtue Ethics [1999], Ch.2)
Book Reference
Hursthouse,Rosalind: 'On Virtue Ethics' [OUP 2001], p.44
A Reaction
This is a powerful point on behalf of virtue ethics. There is a correct way to feel about the application of rules and calculations. Judges sleep well at night, but virtuous people may not.