While I was getting my Pale Fire review ready for posting, I found that I hadn't written down the first sentence, and I wasn't able to find an instance of the book on Amazon that I could look into (that's my usual tactic when something like that happens).
Lucky for me and maybe you too, someone has taken the time to turn Pale Fire into HTML, as I'm sure Nabokov always wanted.
Thank you Shannon Chamberlain, whoever you are. I doubt this translates well to mobile, but have a look anyway.
This also means that I can link to the commentary on line 493 that I mentioned in my review as being too long to quote but also the most harrowing thing in the entire novel.