4. "Only bad religions depend on mysteries, just as bad governments depend on secret police." A character's response to a discussion about eating from the tree of knowledge."
- Alasdair Gray, Poor Things
5. "It is a tragicomic fact that our proper upbringing has become an ally of the secret police. (...) The "Tell the truth!" imperative drummed into us so automatically that we feel ashamed of lying even to a secret policeman."
- Milan Kundera, The Unbearable Lightness of Being
6. "That gimcrack little desk, probably sham antique Louis XIV. She had said something to him once about there being a secret drawer in it. Secret drawer! That would not fool the police long."
- Agatha Christie, A Pocket Full of Rye
7. "un·der·cov·er adj. (of a person or their activities) involved in or involving secret work within a community or organization, esp. for the purposes of police investigation or espionage: an undercover police operation. ■ adv. as an undercover agent: a special unit of the police that operates undercover."
- Erin McKean, The New Oxford American Dictionary
8. "every time the secret police close in, our heroes are able to disapparate—a term that always makes me think of an attempt at English by George W. Bush."
- Christopher Hitchens, Arguably: Selected Essays
9. "The FBI is supposed to investigate criminal activities, but, like the old Soviet secret police, it seems also to take note of gatherings and public statements where the government is criticized."
- Howard Zinn, You Can't Be Neutral on a Moving Train: A Personal History of Our Times
10. "Philosopher John Gray, though himself an atheist, writes that when atheism becomes a political project, the invariable result is an ersatz religion that can only be maintained by tyrannical means 64—by secret police and death camps."
- Nancy Pearcey, Finding Truth: 5 Principles for Unmasking Atheism