Don't you see, you blithering idiot? There may be millions of combinations, and all you can do is this.
5 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 01:09:29.814 in the Blu-ray version of the movie.
Quote context
[...]
- Have another go. Try as you've never tried before.
- All right, for what it's worth.
- Shut your eyes. It'll help you to concentrate.
- Oh, of all the caddish tricks. I can't think what's come over you.
- It's entirely your fault. You can't cheat a ghost.
- What the devil are we going to do now?
- I shall have to go on trying, that's all.
- What comes next? Oh! What are we going to do? What are we going to do?
- Good heavens, he's gone. And I wasn't looking.
- Do I make passes? Or do I make passes?
[...]

 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)