Listen. It's a tough universe. There's all sorts of people and things trying to do you, kill you, rip you off, everything. If you're going to survive out there, you've really gotta know where your towel is.
14 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 1 sitcom.
You can hear this line at 00:25:31.640 in the Blu-ray version of the TV Series.
Quote context
[...]
- How did you get here in the first place?
- Easy. Got a lift with a teaser.
- Teasers?
- Ah! A towel. Keep this and guard it with your life.
- Huh?
- Huh?
- Fish?
- Fish.
- What do you suspect me to do with that?
- What?
- Well, it's only a little one.
- Listen.
- What?
[...]