The unknown always seems unbelievable, Lucas.
3 seconds sound clip from the Creature from the Black Lagoon (1954) movie soundboard.
You can hear this line at 00:40:18.216 in the Blu-ray version of the movie.
Quote context
[...]
- It sounds incredible, but it appeared to be human.
- I tell you, if it's what I think I saw, it's the greatest find yet. Nothing compares to it.
- I've got the proof here in my lens.
- Crazy Goole, everybody called her.
- The unknown always seems unbelievable, Lucas.
- This is no legend, as you'll soon see for yourself.
- Interesting that the fossil I found was out of the same period.
- The kamongo was a fish that breathed air.
[...]