“Let the fairy tale begin on a winter's morning, then, with one drop of blood newly-fallen on the ivory snow: a drop as bright as a clear-cut ruby, red as a single spot of claret on the lace cuff.”

Mary of Argyle, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

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Official Mix tapes, Da Drought 3 (2007)

Mid-Winter http://poetry.about.com/library/weekly/blrossettichristmas.htm, st. 1 (1872).
Source: The Poetical Works of Christina Georgina Rossetti

To an ambassador (1785), as quoted in The Works of John Adams, Second President of the United States: Autobiography http://books.google.com/books?id=lWcsAAAAIAAJ&pg=PA392 (1851), by Charles F. Adams, p. 392.
1780s
Context: Neither my father or mother, grandfather or grandmother, great grandfather or great grandmother, nor any other relation that I know of, or care a farthing for, has been in England these one hundred and fifty years; so that you see I have not one drop of blood in my veins but what is American.

About the Women to drive movement. As quoted in Saudi woman claims she was detained for driving http://edition.cnn.com/2011/WORLD/meast/05/21/saudi.women.drivers/ (May 27, 2011) by Atika Shubert, CNN.

Letter to papal nuncio Count Dugnani (14 February 1818)
1810s

Source: Orlando: A Biography (1928), Ch. 3
Context: We may take advantage of this pause in the narrative to make certain statements. Orlando had become a woman — there is no denying it. But in every other respect, Orlando remained precisely as he had been. The change of sex, though it altered their future, did nothing whatever to alter their identity. Their faces remained, as their portraits prove, practically the same. His memory — but in future we must, for convention's sake, say 'her' for 'his,' and 'she' for 'he' — her memory then, went back through all the events of her past life without encountering any obstacle. Some slight haziness there may have been, as if a few dark drops had fallen into the clear pool of memory; certain things had become a little dimmed; but that was all. The change seemed to have been accomplished painlessly and completely and in such a way that Orlando herself showed no surprise at it. Many people, taking this into account, and holding that such a change of sex is against nature, have been at great pains to prove (1) that Orlando had always been a woman, (2) that Orlando is at this moment a man. Let biologists and psychologists determine. It is enough for us to state the simple fact; Orlando was a man till the age of thirty; when he became a woman and has remained so ever since.

Tremendous Trifles (1909), XVII: "The Red Angel"
Paraphrased Variant: Fairy tales are more than true — not because they tell us dragons exist, but because they tell us dragons can be beaten.
The earliest known attribution of this was an epigraph in Coraline (2004) by Neil Gaiman; when questioned on this at his official Tumblr account http://neil-gaiman.tumblr.com/post/42909304300/my-moms-a-librarian-and-planning-to-put-literary, Gaiman admitted to misquoting Chesterton: "It’s my fault. When I started writing Coraline, I wrote my version of the quote in Tremendous Trifles, meaning to go back later and find the actual quote, as I didn’t own the book, and this was before the Internet. And then ten years went by before I finished the book, and in the meantime I had completely forgotten that the Chesterton quote was mine and not his.
I’m perfectly happy for anyone to attribute it to either of us. The sentiment is his, the phrasing is mine.
Paraphrased variant: Fairytales don’t tell children that dragons exist. Children already know that dragons exist. Fairytales tell children that dragons can be killed.
Appeared in Criminal Minds 2007 episode Seven Seconds ( IMDB quote entry http://www.imdb.com/title/tt1103432/quotes?item=qt1184717)
Context: Fairy tales, then, are not responsible for producing in children fear, or any of the shapes of fear; fairy tales do not give the child the idea of the evil or the ugly; that is in the child already, because it is in the world already. Fairy tales do not give the child his first idea of bogey. What fairy tales give the child is his first clear idea of the possible defeat of bogey. The baby has known the dragon intimately ever since he had an imagination. What the fairy tale provides for him is a St. George to kill the dragon. Exactly what the fairy tale does is this: it accustoms him for a series of clear pictures to the idea that these limitless terrors had a limit, that these shapeless enemies have enemies in the knights of God, that there is something in the universe more mystical than darkness, and stronger than strong fear.

Source: Sharp Objects