I agree that this book is far more than the movie versions. I found it remarkable when I first read it as a teenager, and I still find it both entertaining and thought provoking.
I pull it out every so often too, so it is one of my favourite books to read, usually at bedtime. i do like the films , all of them d spite that they deteriorated,(perhaps i like Chuck Heston more), but the book is always worrth a rre-read. Evelyn