The Hu-Man knew about atomic energy, but had not mastered the cosmic ray. Wherever I directed the calcinator beam, they crumbled. At first, the fools thought it came from one among their many nations. They began destroying each other with hydrogen bombs.

— Ro Man The Robot Monster (George Barrows)

14 seconds sound clip from the Robot Monster (1953) movie soundboard.

You can hear this line at 00:15:17.458 in the Blu-ray version of the movie.

Quote context

[...]

- Extension Ro-Man, XJ-2, reporting to Guidance Ro-Man. I salute you.

- You are late 14 minutes!

- Gravitational pull is stronger than reported. .7652 higher than our planet.

- Accepted. Report.

- May I ask first for other news?

- Granted.

- No life has been discovered on any other planets. Earth is our only rival.

- Was, Great Guidance.

- The Hu-Man knew about atomic energy, but had not mastered the cosmic ray. Wherever I directed the calcinator beam, they crumbled. At first, the fools thought it came from one among their many nations. They began destroying each other with hydrogen bombs.

- I announced myself to keep them from wiping out cities, which will give our people much amusement.

- Too late, they banded against me.

- Their resistance pattern showed some intelligence, but all are gone now. The way is clear for our people.

- I want facts, not words.

- Fact My pulse has been reduced to plus-zero-zero.

[...]