If we try and bind him now, he'll throw us off and escape. We must take him when he's asleep and chloroform him. Wait here.
7 seconds sound clip from the The Invisible Man (1933) movie soundboard.
You can hear this line at 00:47:32.942 in the Blu-ray version of the movie.
Quote context
[...]
- I tell you, he's insane. It's for us to cure him, Kemp and I. Keep away, Flora.
- Listen, Doctor, he was a different man when he saw Flora leave the car. He won't hurt her.
- Thank God you're home, Jack.
- I would have come to you at once, Flora, but for this.
- How wonderful it is to see you.
[...]