More opening lines of books

Anybody know of any other sites that might be of use in
finding the opening/closing lines of books? Well if not,
does anybody happen to know this one:

"Happy families are all alike, every unhappy family is unhappy… " >>>>>>>>???

I’m about 99% sure that’s from Anna Karenina.

Yes, opening sentence from Tolstoy’s Anna Karenina.

Nothing is a guarantee, but aside from running the lines through you can also try the various reference works at (including an older version of Bartlett’s Familiar Quotations and Brewer’s Dictionary of Phrase and Fable among others).