I really liked this film. It's intense and brooding. I spent six years being taught by mostly cold-hearted mean-spirited nuns, then monks. I could relate. I liked the way little tidbits of information are fed to the viewer, allowing them to piece together the back story without it being handed to you on a silver platter. I wanted more clarity around Cillian Murphy's character's state of mind in present time, and what he may have been like as an adult earlier in life. Great cinematography and acting all around.