Bellamy: Clarke, what are you doing?
Clarke: What I have to. Like always. Now get away from the door.
Bellamy: No. This isn't like shutting the dropship door or pulling the lever in Mount Weather or in the City of Light. We knew what we were stopping then. Now, we know nothing.
Clarke: We know that if that door stays shut, the human race survives. Please.
Bellamy: You're gonna have to make it a kill shot. It's the only way you're gonna stop me.