- You'd already passed the purely physical crisis. That apparition of death is what we call the psychological crisis. 
- Yes, maybe. But suppose I go on seeing things? 
- You won't.
10 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 00:14:37.039 in the Blu-ray version of the movie.
Quote context
[...]
- It couldn't have been a dream. I hadn't had time to fall asleep.
- Nurse had only just left me.
- Yes, you checked the time, it was no more than five minutes.
- Does that mean I'm going crackers?
- My dear chap, of course not.
- That fear has remained with you.
- Oh, you mean in my subconscious mind?
- Yes, maybe. But suppose I go on seeing things?
- In fact, I'll lay you 2 to 1 in pounds, we'll have you out of here in a week.
- It's a bet. If I lose, I win.
- As a matter of fact, I won. That is, I lost, if you see what I mean.
- Excuse me, can you tell me the time?
- Yes, it's quarter past four.
- Thanks.
- Just room for one inside, sir.
[...]

 Dead of Night (1945)
 Dead of Night (1945)  Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)