- Dr. Douglas Martin: Who are you?
- Deneb Tala: A scientist. Like yourself.
- Dr. Douglas Martin: Where do you come from?
- Deneb Tala: From a planet yet unknown to you.
- Dr. Douglas Martin: You know my name. You speak English.
- Deneb Tala: We speak every language.
- Dr. Douglas Martin: Well haven't you heard? I'm a mental case! Can't even be trusted with my own work! AHH!
- Major Clift, MD: Well, Dr. Martin seems to be indestructible except for his hallucination.
- Colonel Banks: Those weren't hallucinations, Colonel. Under sodium amytal, a patient loses all control of his imagination.
- Major Clift, MD: Well, then, he shouldn't be able to fabricare these stories.
- Colonel Banks: That's right!
- Briggs, FBI: Major, you're not trying to tell us that everything he said was true?
- Major Clift, MD: Look, gentlemen, I can only give you the medical facts. As for the rest - you'll have to decide that for yourselves... Excuse me, please!