Here are quite a few that stick with me:
The unicorn lived in a lilac wood, and she lived all alone. - The Last Unicorn by Peter S. Beagle.
O Palicrovol, with death and vengeance in your eyes, I write to you because over the centuries there are tales you have forgotten, and tales you never knew. - Hart's Hope by Orson Scott Card
On a certain day in June, 19--, a young man was making his way on foot northward from the great City to a town or place called Edgewood, that he had been told of but never visited. His name was Smoky Barnable, and he was going to Edgewood to get married; the fact that he walked and didn't ride was one of the conditions placed on his coming there at all. - Little, Big by John Crowley
The story of Terisa and Geraden began very much like a fable. - The Mirror of Her Dreams by Stephen R. Donaldson
A great city is nothing more than a portrait of itself, and yet when all is said and done, its arsenals of scenes and images are part of a deeply moving plan. - Winter's Tale by Mark Helprin
Lolita, light of my life, fire of my loins. My sin, my soul. Lo-lee-ta: the tip of the tongue taking a trip of three steps down the palate to tap, at three, on the teeth. Lo. Lee. Ta. - Lolita by Vladimir Nabakov
It was a bright cold day in April, and the clocks were striking thirteen. - 1984 by George Orwell
The magician's underwear had just been found in a cardboard suitcase floating in a stagnant pond on the outskirts of Miami. - Another Roadside Attraction by Tom Robbins
Dante stared and stared at the corpse, but a blindness waited behind his eyes. It was as if he couldn't see the body; couldn't grasp it, or what it meant. - Resurrection Man by Sean Stewart