[ Harold's thought about that, too, about saving worlds here, and hearing John say it out loud makes several thoughts run rapidly through his mind. They're instinctual calculations, the kind of adjustment in future planning Harold makes constantly, like breathing.

The difference between saving one irrelevant life and a whole world is one that matters to him very much, but not in the way John might expect. Harold had been forced to consider saving the whole world from Samaritan -- Root had vociferously argued that to him for so long, and he finally saw her as right -- but he still believes that it isn't what they should pursue normally. ]

I agree, but what you said on the roof -- [ Harold falters, the memories momentarily intense, before he pushes through them. ] About saving one life at a time. That's still what I want to do. We'll save worlds if we can, of course, but...

In the end, that was the difference between us and Samaritan. I don't want to lose sight of that.

[ Perhaps this is a swerve from talking about their personal reconciliation with staying here, staying together, staying alive, but for John and Harold that agreement has always rested on their shared drive to help others. It feels natural, even necessary, to return to that now. ]