Ripley, for God's sake, this is the first time that we've encountered a species like this. It has to go back. All sorts of tests have to be made.
11 seconds sound clip from the Alien (1979) movie soundboard.
You can hear this line at 00:49:27 in the Blu-ray version of the movie.
Quote context
[...]
- Well, we've gotta have a look at this.
- Seems dead enough. Well, good. Let's get rid of it.
- Are you kidding? This thing bled acid. Who knows what it's gonna do when it's dead.
- Think it's safe to assume it isn't a zombie.
- Well, I'd soon... as not burn it at the stake, but you're the science officer. It's your decision.
- How come I've got to change my mind? The decision's been made.
[...]