“What is it that makes us human? It's not something you can program....” – Marcus Wright, Terminator Salvation ... Movie Quotes Database

(As Marcus gives his heart to John Connor)

What is it that makes us human? It's not something you can program. You can't put it into a chip. It's the strength of the human heart. The difference between us and machines.

More from Terminator Salvation

Kyle Reese You want to know the difference between us and the machines? We bury our dead. But no one is coming to bury you. Serena Kogen You're doing something very noble, Marcus. Marcus Wright No, I'm guilty. Just cut me up until there's nothing left. Kyle Reese Who are you?! John Connor John Connor!