Frodo: [telepathically] If you ask it of me, I will give you the One Ring.

Galadriel: You offer it to me freely? I do not deny that my heart has greatly desired this.

[starts to grow dark]

Galadriel: In the place of a Dark Lord you would have a Queen! Not dark but beautiful and terrible as the Morn! Treacherous as the Seas! Stronger than the foundations of the Earth! All shall love me and despair!

[she stops]

Galadriel: I have passed the test. I will diminish, and go into the West, and remain Galadriel.

Frodo: I cannot do this alone.

Galadriel: You are a Ring-bearer, Frodo. To bear a Ring of Power is to be alone.

Click here for the scene from Lord of the Rings