You can look the other way once, and it’s no big deal, except it makes it easier for you to compromise the next time, and pretty soon that’s all you’re doing; compromising, because that’s the way you think things are done. You know those guys I busted? You think they were the bad guys? Because they weren’t, they weren’t bad guys, they were just like you and me. Except they compromised… Once.
Jack Bauer, from the opening episode of “24,” Season One.