[Arathiriel]

Here are a few of my favorites:

'If you don't let me in, Frodo, I shall blow your door right down your hole and out through the hill.' - Gandalf

'Come in! Come in! I thought it was Lobelia.'
'Then I forgive you. But I saw her sometime ago, driving a pony-trap towards Bywater with a face that would have curdled new milk.' - Frodo & Gandalf

"How long have you been eavesdropping?
"Eavesdropping, sir? I don't follow you, begging your pardon. There ain't no eaves at Bag End, and that's a fact!" - Gandalf & Sam

"Fool of a Took! This is a serious journey, not a hobbit walking-party. Throw yourself in next time, and then you will be no further nuisance. Now be quiet!" - Gandalf

'Well, here at last, dear friends, on the shores of the Sea comes the end of our Fellowship in Middle-Earth. Go in peace! I will not say: do not weep; for not all tears evil.' - Gandalf

I am a servant of the Secret Fire,
Wielder of the flame of Anor.
Dark fire will not avail you, Flame of Udûn.
Go back to the shadow!
You shall not pass!! - Gandalf

'Behold, I am not Gandalf the Grey, whom you betrayed. I am Gandalf the White, who has returned from death. You have no color now, and I cast you from the order and from the Council.' - Gandalf