“There are bad people in the world: Murderers and psychopaths and telemarketers who won't take no for an answer.”

“Is it morally acceptable to murder one hundred innocent people in the process of catching a serial killer who has murdered ten people? If you think World War II was justified, your answer should be yes.”

“... we met with more closed doors than open ones -- and the people who answered our knocks were invariably older. Young people didn't aswner the door to strangers, who would undoubtedly be trying to sell something, any more than they would answer the telephone to telemarketers once Caller ID came along. The only people we encountered going door-to-door were the ones old enough to remember when that's the way the world worked.”

“I won't let ignorance murder the people I love.”

“I mean it as a compliment when I say that you could almost define a philosopher as someone who won't take common sense for an answer.”

“Theexperience he'd gained during his years in the police forcehad given him this unambiguous answer: there are nomurderers. Only ordinary people who commit murder”