Any communitys arm of force - military, police, security - needs people in it who can do necessary evil, and yet not be made evil by it. To do only the necessary and no more. To constantly question the assumptions, to stop the slide into atrocity.
Lois McMaster BujoldThe Imperial Service could win a war without coffee, but would prefer not to have to.
Lois McMaster BujoldThe rule for finding plots for character-centered novels, which is to ask: 'So what's the worst possible thing I can do to *this* guy?' And then do it.
Lois McMaster Bujold