His only interest is to prove his theory.
2 seconds sound clip from the 4D Man (1959) movie soundboard.
You can hear this line at 00:03:06.754 in the DVD version of the movie.
Quote context
[...]
- A man, an idea, the equipment, a place to work in secret: All the ingredients are here.
- His only interest is to prove his theory.
- Now it's steel against steel.
- Two objects can occupy the same space at the same time under proper conditions.
[...]