Of course, our little experiment can be performed only once. If it succeeds, I lose my model forever. That's why I need witnesses.
11 seconds sound clip from the The Time Machine (1960) movie soundboard.
You can hear this line at 00:12:32 in the Blu-ray version of the movie.
Quote context
[...]
- Wait, let's do this properly.
- You can spare a cigar, I trust, Doctor?
- Now, let us imagine that this cigar is the time traveler.
- Now, in front of him is the lever which controls movement.
[...]