As Jodie's character testifies below – she comes to realize that faith and science may not be so separate after all – and she does her best in her own way to reassure all of us that there is life out there and we are not alone in this universe (as she has previously felt all of our life). This dialogue encapsulates my favorite part of the movie – and one of the main reasons that it is one of my favorite movies – I encourage you to see it if you haven’t yet had the opportunity – either way, enjoy this quote (courtesy of IMDB.com). I also found the actual clip on Youtube and attached if below for those of you who have access to video and sound.
[pause, Ellie looks at Palmer]
Michael Kitz: Please answer the question, doctor.
Ellie Arroway: Is it possible that it didn't happen? Yes. As a scientist, I must concede that, I must volunteer that.
Michael Kitz: Wait a minute, let me get this straight. You admit that you have absolutely no physical evidence to back up your story.
Ellie Arroway: Yes.
Michael Kitz: You admit that you very well may have hallucinated this whole thing.
Ellie Arroway: Yes.
Michael Kitz: You admit that if you were in our position, you would respond with exactly the same degree of incredulity and skepticism!
Ellie Arroway: Yes!
Michael Kitz: [standing, angrily] Then why don't you simply withdraw your testimony, and concede that this "journey to the center of the galaxy," in fact, never took place!
Ellie Arroway: Because I can't. I... had an experience... I can't prove it, I can't even explain it, but everything that I know as a human being, everything that I am tells me that it was real! I was given something wonderful, something that changed me forever... A vision... of the universe, that tells us, undeniably, how tiny, and insignificant and how... rare, and precious we all are! A vision that tells us that we belong to something that is greater then ourselves, that we are *not*, that none of us are alone! I wish... I... could share that... I wish, that everyone, if only for one... moment, could feel... that awe, and humility, and hope. But... That continues to be my wish.