You've got to do what you've got to do, and I've got to do what I've got to do.
— Dr. Emmett Brown (Christopher Lloyd)
5 seconds sound clip from the Back to the Future Part III movie soundboard.
You can hear this line at 01:08:49.342 in the DVD version of the movie.
Quote context
[...]
- You heard what that son of a bitch called me last night.
- I can't tell you. It might make things worse.
- Wait a minute. Doc, what is wrong with my future?
- Marty, we all have to make decisions that affect the course of our lives.
- You've got to do what you've got to do, and I've got to do what I've got to do.
- 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.
[...]