I would include Walden and Robinson Crusoe in my list, but both smack of selfsufficentish themes.

So, here are a few others I can never resist pulling off the shelf.
1) The Club Dumas - Arturo Perez-Reverte - I have no idea why this book is so appealing. I've read it too many times and still can't resist re-reading.
2) Starlight Nights - Leslie Peltier - A wonderful and joyful autobiography of a dedicated amateur astroner and naturalist.
3) Collected Stories of Arthur C. Clarke - Arthur C. Clarke (of course) - Yep, I'm still a science fiction fan even in my gray hair stage of life. I've read all the stories many times, yet some of them still thrill me like they did the first time I read them many years ago.
4) Letters - Seneca - OK, I know it's odd, but I've read Seneca's letters in my treasured Loeb edition so often that I've read the books to pieces. My family gave me a new set last Christmas but I keep the battered copies always at hand.
5) The Count of Monte Cristo - Alexandre Dumas - What's not to like!