Watchman. Somewhere here, there is the question of "seeing clearly". Seeing what? According to what?
Book A (sketchbook), c 1965: as quoted in Jasper Johns, Writings, sketchbook Notes, Interviews, ed. Kirk Varnedoe, Moma New York, 1996, p. 60
1960s
“We can't spy on them if they aren't spying on us, now can we?" Warped logic, but okay.”
Source: Alice in Zombieland
Help us to complete the source, original and additional information
Gena Showalter 144
American writer 1975Related quotes
“I got nothing. Even the spies I’m spying on who are spying on other spies got nothing.”
Source: Shadow's Claim

“Heir sall Wantones ga spy them and cum agane to the king. (in Scottish)”
Ane Satyre of the Thrie Estaitis, Stage direction, line 326

Source: [http://www.washingtonpost.com/world/national-security/edward-snowden-after-months-of-nsa-revelations-says-his-missions-accomplished/2013/12/23/49fc36de-6c1c-11e3-a523-fe73f0ff6b8d_story.html 2013 Christmas Message
26 December 2013
He turned to Lord Peter with a sudden realization. “I’m sorry,” he said. “I didn’t mean to imply—”
”That’s all right, Your Highness,” Lord Peter said. “It’s a common reaction. Their spies are dirty, filthy scum, not fit to wipe your boots on, while our spies are noble gentlemen doing dangerous work for the love of King and Country. Would that it were so, Your Highness, but I’m afraid that sometimes the desired image is at fault—in both directions.”
Source: Ten Little Wizards (1988), Chapter 4 (p. 33)

“Tinker, Tailor, Soldier, Spy (2011 film)”
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“Since knowledge is but sorrow's spy,
It is not safe to know.”
The Just Italian (licensed Oct. 2, 1629; printed 1630), Act v. Sc. 1.
Compare: "From ignorance our comfort flows", Matthew Prior, To the Hon. Charles Montague; "Where ignorance is bliss, ’T is folly to be wise", Thomas Gray, Eton College, Stanza 10.

to the happy tune of counterintelligence
Counterterrorism and Cybersecurity: Total Information Awareness (2nd Edition), 2015