Good day, Mr. Klaatu.

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

You can hear this line at 00:10:35 in the radio play.

Quote context

[...]

- The President will, of course, do his best to bring about the meeting you desire.

- I know it will be quite useless. I wish it were otherwise.

- I'm very sorry, Mr. Klaatu.

- Wait. Before making any grave decisions, I think I should get out among your people and become familiar with the basis for these strange, unreasoning attitudes.

- Our military people insist that you do not attempt to leave the hospital. The door will be locked. I'm sure you understand.

- Good day, Mr. Klaatu.

- The door will be locked. Will it now?

- Klaatu escaped. Nor could the embarrassing news of his disappearance long be suppressed.

- It was read about in the papers and described in excited tones over the radio.

- The authorities at Walter Reed Hospital still refuse to comment on how he managed to escape except to say that he broke into a hospital locker and stole clothing belonging to a staff doctor.

[...]