E.B. White's Only Book

"Walden is the only book I own, although there are some others unclaimed on my shelves. Every man, I think, reads one book in his life, and this one is mine. It is not the best book I ever encountered, perhaps, but it is for me the handiest, and I keep it about me in much the same way one carries a handkerchief — for relief in moments of defluxion or despair."

Lovely. Makes me, as always, wish I had known E.B. White--maybe well enough to give him another book, A Sand County Almanac, of course.

What is your one book?