So, I was just in the library looking for a dictionary of quotations and I came across a book called The Symbolic Pig: An Anthology of Pigs in Literature and Art by F C Sillar and R M Meyler. (Would you file that next to a dictionary of quotations? If not, where would you file it?) Naturally I had a flick through, looked up flying pigs and found this quotation:
"I have myself a poetical enthusiasm for pigs, and the paradise of my fancy is one where pigs have wings. But it is only men, especially wise men, who discuss whether pigs can fly; we have no particular proof that pigs ever discuss it."
from Fancies versus Facts by G.K. Chesterton
I rather like that.