“A fairytale is not an allegory. There may be allegory in it, but it is not an allegory.”

Source: Anna Karenina

As quoted in "Neil Gaiman reveals power of writing Doctor Who" by Tim Masters at BBC News (24 May 2010)

The Cherubinic Wanderer

If you do not know what it means, what is easier than to say so? If you do see a meaning in it, there it is for you to give him. A genuine work of art must mean many things; the truer its art, the more things it will mean. If my drawing, on the other hand, is so far from being a work of art that it needs THIS IS A HORSE written under it, what can it matter that neither you nor your child should know what it means? It is there not so much to convey a meaning as to wake a meaning. If it do not even wake an interest, throw it aside. A meaning may be there, but it is not for you. If, again, you do not know a horse when you see it, the name written under it will not serve you much.
The Fantastic Imagination (1893)

Source: Myth, Symbol, and Meaning in Mary Poppins (2007), Ch. 2, p. 39

The Fantastic Imagination (1893)
Context: A fairytale, like a butterfly or a bee, helps itself on all sides, sips at every wholesome flower, and spoils not one. The true fairytale is, to my mind, very like the sonata. We all know that a sonata means something; and where there is the faculty of talking with suitable vagueness, and choosing metaphor sufficiently loose, mind may approach mind, in the interpretation of a sonata, with the result of a more or less contenting consciousness of sympathy. But if two or three men sat down to write each what the sonata meant to him, what approximation to definite idea would be the result? Little enough — and that little more than needful. We should find it had roused related, if not identical, feelings, but probably not one common thought. Has the sonata therefore failed? Had it undertaken to convey, or ought it to be expected to impart anything defined, anything notionally recognizable?
"But words are not music; words at least are meant and fitted to carry a precise meaning!"
It is very seldom indeed that they carry the exact meaning of any user of them! And if they can be so used as to convey definite meaning, it does not follow that they ought never to carry anything else. Words are like things that may be variously employed to various ends. They can convey a scientific fact, or throw a shadow of her child's dream on the heart of a mother. They are things to put together like the pieces of a dissected map, or to arrange like the notes on a stave.

Source: How to Kill a Rock Star

Source: Myth, Symbol, and Meaning in Mary Poppins (2007), Ch. 2, p. 39
Context: The true fairytales … come straight out of myth; they are, as it were, minuscule reaffirmation of myths, or perhaps the myth made accessible to the local folky mind. One might say that fairytales are the myths falling into time and locality … is the same stuff, all the essentials are there, it is small, but perfect. Not minimized, not to be made digestible for children.