“I am crazy as hell, but I know it. And knowing it is a kind of sanity that makes the sickness worse.”

Variant: I felt like crying but nothing came out. it was just a sort of sad sickness, sick sad, when you can't feel any worse. I think you know it. I think everybody knows it now and then. but I think I have known it pretty often, too often.
Source: Tales of Ordinary Madness

I'll Go Crazy if I Don't Go Crazy Tonight
Lyrics, No Line On The Horizon (2009)

"Miss World"
Song lyrics, Live Through This (1994)

The Catcher in the Rye (1951)
Context: Anyway, I keep picturing all these little kids playing some game in this big field of rye and all. Thousands of little kids, and nobody's around — nobody big, I mean — except me. And I'm standing on the edge of some crazy cliff. What I have to do, I have to catch everybody if they start to go over the cliff — I mean if they're running and they don't look where they're going I have to come out from somewhere and catch them. That's all I'd do all day. I'd just be the catcher in the rye, and all. I know it's crazy, but that's the only thing I'd really like to be. I know it's crazy.

John Banville: claiming Kafka as an Irish writer (2011)

Source: Juno: The Shooting Script

Interview with NewsX (27 October 2009)

The Son (2013)