To arrest him in the Casbah would be simple. To get him out... impossible.
6 seconds sound clip from the Algiers (1941, Lux Radio Theatre) classic radio play.
You can hear this line at 00:06:05 in the original recording.
Quote context
[...]
- And in that labyrinth Pepe le Moko is at home. And he is safe... as long as he stays there.
- Well, how...? How does this Pepe le Moko conceal himself? Disguise, no doubt.
- You do not know Pepe, Commissioner. He'd laugh at disguise.
- Then why don't you find him, Inspector?
- Ah, that is singularly easy. I see him every day.
- Then why, Inspector, has there been no effort to make an arrest?
- To arrest him in the Casbah would be simple. To get him out... impossible.
- I flatter myself that I do a great deal, in my humble way.
- I learn about Pepe. I know his habits. I study his weaknesses.
- When one cannot use guns, one must work with brains.
- Inspector, we're going into the Casbah tonight!
[...]