- You'll never get it. The place is too well-guarded.
- Not for a plan which has just occurred to me.

5 seconds sound clip from Superman (1948) - Hurled To Destruction (Chapter 13).

You can hear this line at 00:07:03.239 in the Blu-ray version of the episode.

Quote context

[...]

- I want you to complete our duplicate of your ray machine.

- Is there anything else you need besides the mono chromite?

- Yes. The real secret of the machine is in the relativity tube. But it'll take months to reproduce it.

- But that tube is in the instrument at the Metropolis University, isn't it?

- Yes.

- Draw a diagram of its location, and tell how it can be detached.

- You'll never get it. The place is too well-guarded.

- Not for a plan which has just occurred to me.

- Kent, here's the exclusive story for you and Jimmy: a modern-science layout on the ray machine.

- You mean they'd let us in to examine it?

- Of course not, but we can photograph the outside of the buildings.

- Jimmy, you will handle the camera, Kent can write the captions. Okay?

- And where do I come in?

- You don't. I need an article of the women's page. Dream up a new way to cook a roast, or toss a salad together.

- How thrilling.

[...]