'If he could build a space ship that can fly to Earth and a robot that can destroy our tanks and guns, what other terrors can he unleash at will?'
14 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.
You can hear this line at 00:12:57 in the radio play.
Quote context
[...]
- This way, please, Mr. Carpenter.
- Where is the creature and what is he up to?
- Aw, Mom, I'm almost full as it is.
- Bobby.
- I'm sorry, Mrs. Crockett. Please go on reading.
- 'Obviously we must track down this monster and destroy him... before he destroys us.'
- Correct! Then why don't they do it?
- This space man or whatever he is. We automatically assume he's a menace. Maybe he isn't after all.
[...]