“Clothes are but little loss, if you escape from drowning.” Tom Bombadil, after he rescues the hobbits from the burial chamber in the barrow.

“I think you are not really as you choose to look.” Frodo to Strider, in the Prancing Pony when Strider first offers himself as a guide.

“All hat is gold does not glitter.” The first line of a poem made by Bilbo about Aragorn, included in Gandalf’s note to Frodo. The whole poem (by Tolkien) is:
“All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not touched by the frost.
From the ashes a fire shall be woken,
A light from the shadows shall spring;
Renewed shall be blade that was broken,
The crownless again shall be king.”

“I think that one of his spies would seem fairer and feel fouler.” Frodo to Strider, after the hobbits have accepted him as a guide.

“I hope the thinning process does not go on indefinitely, or I shall become a wraith.” Frodo, joking about his diminishing waistline in the wilderness.

“It is also as good a way of saying ‘here we are’ as I can think of, bar shouting.” Sam, when Strider suggests building a fire in the dell by Weathertop. This was very much changed in the movie.

“Stupidity isn’t illegal.” Bowling, “Horse Power.” Roi’s comment on how hard it is to prove that the Company is trying to force the colonists into debt slavery instead of just being stupid.