The book
Before anyone sees this movie, they HAVE to read the book! It is excellent, and the only way to watch this movie is to read the book first. The book was written in the 1920's, and the theme was wery actual at the moment. E.M Forster, the author, is questioning the Britsh colonial moral, and the story is absolutely fantastic!
But if you haven't read the book before you see the movie, it may get a bit boring. You need good time to understand the meaning of the story, and that is something you cannot do in 157 minutes.
If you red the book first, this movie is great if you see it afterwards.