It's tough to select a favourite from among a couple of thousand, but if hard pressed I'll settle for a ten volume set called "The Modern Illustrated Library". Originally a part of my dad's collection, I grew up with it. In those volumes I was reading in secondary school about things people usually study much later. The ten volumes are now with me and they span all critically important human knowledge areas. They are more than just books for me, they are my best childhood companions.

Michael, yes Sapiens covers only facts about the human history, it is not a fiction. I like these kind of books because I can learn from them. If we are talking about fictions, the first book comes to my mind is The Little Prince by Antoine de Saint-Exupéry. I have not read this one yet, but will read it soon. They say that for a kid it is a tale, for an adult it has a deeper meaning about life. I don't know whether it is true or not, but it is one of the best-selling books of all time, so I'll give it a chance :)

I agree with Feri : good subject.

I don't know that I can grade or sort like that with books;; a looser set of categories like "great", "good" and "other" might be as far as I could go towards that. And the ones that mean most to me change all the time.

Somila, I imagine your favourite Nervous Conditions touched things that matter in life.

Feri, I guess Sapiens is a non- fiction book? That made me wonder why had immediately assumed fiction for this thread.

The novel I've just finished is Ben Okri's The Freedom Artist, which definitely has something about. I think it's trying to touch big themes. I think I need a little more distance to work out how I feel about it.

@Somila: There are many books that I would like to read again. Such examples are "The First Day" followed by "The First Night" by Marc Levy. I have read them in French. Another book is "The Fate of Africa" by Martin Meredith, who impressed me with his knowledge about that continent. The problem is that I always have other books that I can not wait to read. As a result, I just continue with the next book, hoping that one day I will go back to my ever-growing list of favorites. 

The best book that i have ever read is The best of me by Nicholas Sparcs.I love it!