The Lord of the Rings: The Fellowship of the Ring2001

Galadriel:
Will you look into the mirror?

Frodo:
What will I see?

Galadriel:
Even the wisest cannot tell. For the mirror shows many things. Things that were, things that are, and some things... that have not yet come to pass.

[Looking into the mirror, Frodo sees the Orcs enslave the Hobbits and reduce the Shire to an industrial wasteland; finally, the Eye of Sauron causes him to stumble backwards]

Galadriel:
I know what it is you saw; for it is also in my mind. [in Frodo's mind] It is what will come to pass if you should fail. The Fellowship is breaking. It is already begun. He will try to take the Ring. You know of whom I speak. One by one, it will destroy them all.

Frodo:
If you ask it of me, I will give you the One Ring. [holds out the Ring to Galadriel]

Galadriel:
You offer it to me freely? I do not deny that my heart has greatly desired this... [Suddenly fierce] In place of a Dark Lord, you would have a Queen! Not dark, but beautiful and terrible as the Dawn! Treacherous as the Sea! Stronger than the foundations of the Earth! All shall love me and despair! [Stops, shaken, and becomes calm again] I pass the test. I will diminish, and go into the West... and remain Galadriel.

Frodo:
I cannot do this alone.

Galadriel:
You are a Ringbearer, Frodo. To bear a Ring of Power is to be alone. [holds up her hand to show a silver, flower-jeweled Ring] This is Nenya, the Ring of Adamant, and I am its keeper. This task was appointed to you and if you do not find a way, no one will.

Frodo:
I know what I must do, it's just that... I'm afraid to do it.

Galadriel:
Even the smallest person can change the course of the future.