Favourite quote from a book?

 When this topic from Long and Short Reviews came up I had to think a little. I've already posted about the Isaac Asimov quote that inspired my novel Photograph, so I thought I would try to find one from a novel this time.

Then I remembered my favourite scene from Jane Austen's Emma - the proposal by Mr Knightley.

"I cannot make speeches, Emma... If I loved you less, I might be able to talk about it more. But you know what I am. You hear nothing but truth from me. I have blamed you, and lectured you, and you have borne it as no other woman in England would have borne it. Bear with the truths I would tell you now, dearest Emma, as well as you have borne with them. The manner, perhaps, may have as little to recommend them. God knows, I have been a very indifferent lover. But you understand me. Yes, you see - you understand my feelings - and will return them if you can. At present, I ask only to hear, once to hear your voice."

For me this is the most romantic proposal Austen ever wrote, and I will never forgive the Anya Taylor-Joy adaptation for playing it for comedy by having Emma get a nosebleed in the middle of it.

So what's your favourite quote?