Bruce Wayne: Why didn't you just kill me?
Bane: Your punishment must be more severe.
Bruce Wayne: Torture?
Bane: Yes, but not of the body. Of the soul. I will build you and Gotham up with hope and then destroy you. Hope is really the key to torture. Gotham will build to a point of joy and then be wiped from the map.
Bruce Wayne: You are a madman.
Bane: When Gotham is ashes... then you have my permission to die.
Bane was totally badass in that movie mate.
Another quote from him when he opened up Blackgate prison;
"We take Gotham from the corrupt! The rich! The oppressors of generations who have kept you down with myths of opportunity, and we give it back to you... the people. Gotham is yours. None shall interfere. Do as you please. Start by storming Blackgate, and freeing the oppressed! Step forward those who would serve. For and army will be raised. The powerful will be ripped from their decadent nests, and cast out into the cold world that we know and endure. Courts will be convened. Spoils will be enjoyed. Blood will be shed. The police will survive, as they learn to serve true justice. This great city... it will endure. Gotham will survive! "