- Maybe he's afraid.
- Ah, he's afraid!
- Well, after all, he was shot the minute he landed here.

8 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.

You can hear this line at 00:13:33 in the radio play.

Quote context

[...]

- What a man.

- '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.

- Well, then, where is he? What's he up to?

- Maybe he's afraid.

- Ah, he's afraid!

- Well, after all, he was shot the minute he landed here.

- I just was wondering what I'd do.

- Perhaps before deciding upon a course of action, you'd want to know more about the people here.

- Nothing strange about Washington.

- A person from another planet might disagree with you.

- It's all right... That's Mr. Stevens calling for me. I'll go to the door.

[...]