Physically, of course, he will never change. He is built of chrome, steel, and glass.
6 seconds sound clip from the Dimension X - Almost Human by Robert Bloch classic radio drama series episode.
You can hear this line at 00:04:20 in the radio play.
Quote context
[...]
- Why do you hide him? Is he dangerous?
- You see, the world is not yet ready for such a thing. Besides, I must study him.
- As you can see by his play, he is very young. Hardly out of the cradle. I'm educating him.
- The brain is undeveloped. It must learn its behavior patterns like any infant.
- Come now, you call that eight-foot monster an infant?
- Physically, of course, he will never change. He is built of chrome, steel, and glass.
- But his brain, oh, that is my wonderful instrument.
- Unlike a human, he has no heritage, no basic instincts such as love or hate.
- But this is none of your business.
- This is making it my business.
- Well, then in some respects he is like a blank tablet. What is written upon the tablet will remain.
- You mean he has no feelings?
[...]