How do I know?
3 seconds sound clip from the The Doctor Prescribed Death (Suspense) classic radio play.
You can hear this line at 00:02:03 in the radio play.
Quote context
[...]
- Why?
- He told me that in his opinion you should be in the asylum.
- Mr. Granger said that? Does he think I am insane?
- He didn't say that. It's you who thinks I'm crazy.
- You never liked me. For some reason, you are trying to tear me down.
- Well, we'll see, Mr. Hellman. You'll see.
- I'll show you whether my works are illogical. I'll show you whether I'm insane.
[...]