Aragorn: Gentlemen! We do not stop 'til nightfall.
Pippin: But what about breakfast?
Aragorn: You've already had it.
Pippin: We've had one, yes. But what about second breakfast?
[Aragorn stares at him, then walks off.]
Merry: Don't think he knows about second breakfast, Pip.
Pippin: What about elevenses? Luncheon? Afternoon tea? Dinner? Supper? He knows about them, doesn't he?
Merry: I wouldn't count on it.
Haldir: The dwarf breathes so loud, we could have shot him in the dark.
Gandalf: Confound it all, Samwise Gamgee, have you been eavesdropping?
Sam Gamgee: I ain't been dropping no eaves, sir, honest! I was just cutting the grass under the window there, if you follow me.
Gandalf: A little late for trimming the verge, don't you think?
Sam Gamgee: I heard raised voices.
Gandalf: What did you hear? Speak!
Sam Gamgee: Oh, nothing important. That is, I heard a good deal about a Ring, and a Dark Lord, and something about the end of the world, but please Mr. Gandalf, sir, don't hurt me. Don't turn me into anything... Un-natural.
Frodo: It's a pity Bilbo didn't kill him when he had the chance.
Gandalf: Pity? It was pity that stayed Bilbo's hand. Many that live deserve death. Some that die deserve life. Can you give it to them, Frodo? Do not be too eager to deal out death in judgment. Even the very wise cannot see all ends. My heart tells me that Gollum has some part to play yet, for good or ill before this is over. The pity of Bilbo may rule the fate of many.
Bilbo: I don't know half of you half as well as I should like, and I like less than half of you half as well as you deserve.
Saruman: Do you know how the Orcs first came into being? They were elves once, taken by the dark powers, tortured and mutilated. A ruined and terrible form of life. Now... Perfected. My fighting Uruk-Hai.
Gimli: Nobody tosses a Dwarf!
Saruman: The hour is later than you think. Sauron's forces are already moving. The Nine have left Minas Morgul.
Gandalf: The Nine?
Saruman: They crossed the River Isen on Midsummer's Eve, disguised as riders in black.
Gandalf: They've reached the Shire?
Saruman: They will find the Ring, and kill the one who carries it.
Gandalf: A wizard is never late, Frodo Baggins. Nor is he early. He arrives precisely when he means to!
Gandalf: Fly, you fools!
Answer: The temptation of the Ring is directly proportional to the power and ambition of the bearer. To someone like Gandalf - a mighty wizard who wants to save the world - the temptation would, over time, prove to be too much, and he's realistic enough to understand that about himself. With an ordinary hobbit who only wants a nice meal and some peace and quiet, the Ring has a lot less to work with.