The final installment in the Divergent series really makes you think. Several parts reminded me of A Clockwork Orange, some of the Hunger Games, and a few of 1984. In other words, it had all the components of a very good novel.
The ending was not as I had expected it to be but it was perfect after a bit of thought. Life does not have a happily ever after finale so it is fitting that books do not either.
I know I will read this series again at some point, simply because it makes me ponder society.