Excellent.
No words to describe. Even the insignificant faults (IMO) of the film - somewhat dryish rationality, as well some conventionality of the settings - transcede to it's qualities: for it works as a "foil" for characters' vivid strength and the intensity of their emotions, and underlines the exceptional cleverness of the script.
It's one of the rare films where the character, in it's close-up, says: "I love you" - and the viewer does not cringe in his seat in discomfort ;-))
Listen to your enemy, for God is talking