Spock: I've noticed that about your people, doctor. You find it easier to understand the death of one than the death of a million. You speak about the objective hardness of the Vulcan heart, yet how little room there seems to be in yours.
Bones: Suffer the deaths of thy neighbor, eh, Spock? You wouldn't wish that on us, would you?
Spock: It might have rendered your history a bit less bloody.