They won't believe it back home, none of them. I wouldn't have believed it myself. Sitting out here, waiting for some monster to appear. That's why we've got to take him.

14 seconds sound clip from the Creature from the Black Lagoon (1954) movie soundboard.

You can hear this line at 00:46:02.977 in the Blu-ray version of the movie.

Quote context

[...]

- Then again, maybe the rotenone isn't going deep enough.

- Maybe we should fix the rotenone to sink deeper down, eh?

- Yeah. Anything is worth a try.

- What was that?

- I don't know.

- Come on. Come on.

- You talking to me, Mark, or something out there?

- Both, David.

- They won't believe it back home, none of them. I wouldn't have believed it myself. Sitting out here, waiting for some monster to appear. That's why we've got to take him.

- Why won't they believe?

- Because we deal with known quantities, with knowledge we've accumulated up to now.

- We've just begun to learn about the water and its secrets, just as we've only touched on outer space.

- We don't entirely rule out the possibility that there might be some form of life on another planet. Then why not some entirely different form of life in a world we already know is inhabited by millions of living creatures?

- We must have the proof!

[...]