I'm not afraid, David, and we've come this far.

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

You can hear this line at 00:17:45.615 in the Blu-ray version of the movie.

Quote context

[...]

- If there is a dead end to this tributary, that's where we'll find the fragments. We might even find the rest of your fossil.

- It's a theory.

- What's wrong with that?

- Even if David's theory is correct, the chances of finding anything are remote.

- Science is always taking the remote chance. Why don't we try it? We might still turn failure into success.

- Well, there's just one thing, going into unexplored territory with a woman.

- I'm not afraid, David, and we've come this far.

- Yeah, I know, but I keep remembering what happened to Carl's men.

- That doesn't sound like the dedicated scientist talking, David.

- Dedication doesn't mean risking the lives of others.

- I've always found Kay was able to take care of herself.

[...]