No, sir. It is not a thing a sane man would do.
4 seconds sound clip from the Dr. Strangelove movie soundboard.
You can hear this line at 00:50:05 in the Blu-ray version of the movie.
Quote context
[...]
- If you take, say, 50 H-bombs in the hundred megaton range and jacket them with Cobalt Thorium G...
- Oh, what a load of commie bull. I mean, after all...
- I'm afraid I don't understand something, Alexi.
- Is the premier threatening to explode this if our planes carry out their attack?
- No, sir. It is not a thing a sane man would do.
- The Doomsday Machine is designed to trigger itself automatically.
- But surely you can disarm it somehow?
- No. It is designed to explode if any attempt is ever made to untrigger it.
- It's an obvious commie trick, Mr. President. We're wasting valuable time.
[...]