Nothing was actually proven by the end of this movie, and that makes it better than just really, really good. It leaves you wondering and debating with your thoughts about tradition and liberalism, and I like that about it. The ending made the movie.
I think the best thing about this movie is Meryl Streep and all her dragon-lady qualities, but I really enjoyed the little compassionate nuances we get to see - most of all in the way she is about Sister Veronica.
I like this movie. Doubt is certainly for thinkers.