David, in the 1995 remake. After being conflicted with his newfound emotions and seeing his mom in danger trying to rescue him while being mind raped, by Mara and the other kids. He embraces his human side and pushes Mara down subduing her long enough for his mother and him to escape the explosion caused by Alan's concealed bomb.
Alan's argument with Mara over emotions. While each differing view has their strong points, Alan get's the last word in the end in regards to David's developing emotions.
Mara Chaffee: Life is cruelty. We all feed on each other, exploit each other in some way to survive.
Dr. Alan Chaffee: I don't agree with you. I think that adaptation is the key to survival. Cooperation and symbiosis...and compassion.
Mara Chaffee: Why do you think your own survival depends upon emotion from us? Shoul we pity you? Empathize with your plight?
Dr. Alan Chaffee: You should feel! You should feel something! Without feelings, you're nothing. You're just second-rate mimics of a higher organism. That's right, higher organisms. We're your superiors in our capacity to love. Without compassion you're a doomed species.