Gandalf: [after failing to open the magical doors of Moria] I once knew every spell in all the tongues of Elves... Men... and Orcs.
Pippin: What are you going to do, then?
Gandalf: Knock your head against these doors, Peregrin Took! And if that does not shatter them, and I am allowed a little peace from foolish questions, I will try to find the opening words.