The Final Line of the Movie

Rating: 10/10 (7 April 2014)

I'm not going to add one more redundant review to the thousands already here, but I do feel the need to make some points about the last line in the movie (without spoilers and without revealing the secret or making it easy).
Note that I am not talking about the double twist ending that explains everything - I am talking about the final line that seems to add one more point after the twists are done.
Nolan is a very logical writer and makes every detail in his movies fit together like a puzzle. He even made dreams into something very mechanical in Inception. He always plays it straight and gives the audience plenty of clues, allowing us to catch on to everything as long as we focus and use our brains.
So the last line in this movie puzzled me because it seemed to just be an ambiguous tease whereas everything before then was made very clear, and this doesn't fit in with Nolan's style.
In addition, the sci-fi elements in this movie bothered me. They didn't fit either. But the final line in the movie turns these into something else in a brilliant way.
There is a very definite and obvious solution to all this, and the final line is very clear once you understand what it is saying and figure out its secret. But don't forget that the secrets of magic are 'disappointingly simple' once you figure them out.
I will not spell it out for you because that would be wrong, but I will give you one clue: Think about the words, and then think about who he is saying it to.
Another clue is the speech given by Angier at the end about the reason he does magic for the audience. This speech also seems out of place unless you realize he is saying it for someone else involved in the movie.
I thought the movie rated 7-8 until the last line of the movie clicked into place. Then it became a ten.