No Kill I (The Devil in the Dark)

[Cavern]
KIRK: (sitting down) Well, what do we do, just talk it over? 
(The creature turns to show it's wound from their last encounter.) 
KIRK: Well, you can be hurt, can't you? We just sit here? It's your move. 
(Spock comes running in and takes aim) 
KIRK: No, no! Don't shoot. Come on over, Mister Spock. 
(He does so, and squats by the Captain.) 
SPOCK: Fascinating. It's made no moves against you? 
KIRK: No. It seems to be waiting. I tried talking to it, but it didn't do any good. 
(Spock points at a pile of silicon nodules.) 
KIRK: Yes, they're all through here, all over the place. Thousands of them. 
SPOCK: Yes, I see. 
KIRK: Does it means something to you? 
SPOCK: Possibly the answer, Captain, but I'm not certain. Captain, you are aware of the Vulcan technique of the joining of two minds. 
KIRK: You think you can get through to that thing? 
SPOCK: It's possible. 
KIRK: Mister Spock, I know it's a terrible personal lowering of mental barriers but if there's a chance 
SPOCK: I'll try. 
(He fastens his phaser to his belt and carefully approaches the worried creature. Without touching, he concentrates for a moment and then cries out.) 
SPOCK: Pain! Pain! Pain! (he staggers back) That's all I got, Captain. Waves and waves of searing pain. It's in agony. 
(The creature climbs onto a rock ledge and etches letters into it.) 
KIRK: No kill I. What is that, a plea for us not to kill it, or a promise that it won't kill us? 
SPOCK: I don't know, Captain.