Prisons are needed only to provide the illusion that courts and police are effective. They're a kind of job insurance.
Police are inevitably corrupted. ... Police always observe that criminals prosper. It takes a pretty dull policeman to miss the fact that the position of authority is the most prosperous criminal position available.
Sympathy for the enemy -- a weakness of police and armies alike. Most perilous are the unconscious sympathies directing you to preserve your enemy intact because the enemy is your justification for existence.