This has been bugging me recently. Any quines or pointers to relevant articles or web pages is appreciated. Thanks!

There was also a quine thread here in comp.lang.c just days ago, search deja.com (the thread's title was something about self-printing programs, I think).

Most quines are notoriously difficult (and fiendish) to write. Perl can cheat, though. :)

Why have a one-page chapter that doesn't say anything? At the least, you should present a quine program written in pure ISO C (I can send you one if you like); […]

Although writing a quine is not always easy, and in fact may seem impossible, it can always be done in any programming language that is Turing complete (see Turing machine), which includes every programming language actually in use.

SelfGOL can reproduce itself; it can turn other programs into a quine; it can display a scrolling banner; it plays the Game of Life; and it contains no (ordinary) loops, goto statements, or if statements. Control flow is done, well, interestingly.

Yet from a different perspective, it describes the process of producing this very code; in other words, it is because object- and meta-language interrelate that makes a quine difficult; in less reflective programs, where means and ends are more separate, this difficulty is not so obvious.

2009, Mike Ash, //groups.google.com/d/msg/rec.arts.sf.written/tN-qCzPjCAE/7Uowd0MXCmUJ Re: 406 Not Acceptable (was Re: "--All You Zombies--" title), rec.arts.sf.written, Usenet
Gee, last time I wrote a quine in Lisp it ended up being kind of difficult...

The solution is to make a quine that is also a λ-expression (instead of a list of statements). This is possible, thanks to S-expressions. The way the quine works relies on the fact that its code is a list of statements and that the last one can take a list of the previous ones as arguments.

Quines exist for any programming language that is Turing complete and it is a common challenge for students to come up with a Quine in their language of choice. The Quine Page provides a comprehensive list of such programs in various languages.

Upon receiving a "QUINE" request by the client, the server will first send a 01 OK response, and will then provide the client with a quine in the programming language used to implement the server.

As with the puzzle of what happens during the combustion of a metal in pure oxygen (the "steel wool" experiment), this result can of course be quined. Taking the phlogistic view, we could say that the calx requires the same phlogiston content as the metal, so of course the amount of water absorbed must be in accord with that.

They deny that mental states and events actually possess the qualitative properties attributed to them by qualia friends and, as a consequence, they advocate quining qualia.

Qualia are quined not because Dennett imagines that there is nothing it is like to be conscious, but because no clear demarcation can be drawn between representations of qualitative properties and representations of other sorts of states.

2001, Nenad Miscevic, “Quining the apriori”, in A. Orenstein, P. Kotatko, editors, Knowledge, Language and Logic: Questions for Quine, Springer, →ISBN, page 95:

Structure in the phenomenological realm is not something to be “quined”, but fostered.

Daniel Dennett's The Philosophical Lexicon defines "quine" as a verb: "to deny the existence or significance of something real or significant". Quine has quined names, intentions, and the distinction between psychology and epistemology. In 1951 Quine quined the distinction between analytic and synthetic statements.

The private language machine and the evolution of a medium: One of the things that Wittgenstein is most famous for is quining "private language". By saying that private languages can't exist Wittgenstein wanted us to recognize the inescapable function of the social fabric in language's work.

One might object that in this section I’ve not exactly quined Cartesian qualia, […]

"Quining" is what I called it in my book. (He certainly didn't call it that!) Quining is an operation that I define on any string of English. […] Here is an example of a quined phrase: "is a sentence with no subject" is a sentence with no subject.

Diamond arises in Gödelian meta-mathematics. In meta-math, sentences can refer to each other's provability, and to quining. This yields self-reference: T = "is provable when quined" is provable when quined.

In "Love And Theft", Dylan quined the love and theft in his songs in the album's title, "Love And Theft". So the subtext, the meaning of the entire album, when preceded by its quotation, its symbol, yields a paradox.

And, of course, the existence of various sigmonsters guarantees entire quined-posts.

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