Marty, the future isn't written. It can be changed. You know that. Anyone can make their future whatever they want it to be.
— Dr. Emmett Brown (Christopher Lloyd)
11 seconds sound clip from the Back to the Future Part III movie soundboard.
You can hear this line at 01:09:34.345 in the DVD version of the movie.
Quote context
[...]
- Marty, I've made a decision. I'm not going with you tomorrow. I'm staying here.
- What are you talking about, Doc?
- There's no point in denying it. I'm in love with Clara.
- Oh, man!
- Doc, we don't belong here. Neither one of us.
- I can't let this one little photograph determine my entire destiny.
- I have to live my life according to what I believe is right in my heart.
- Doc, you're a scientist. So you tell me what's the right thing to do up here!
[...]