That's a sudden shift, considering she was confusedly admiring his abilities in relatively basic (to him) chemistry a moment ago. Ghost considers her, folding his arms.

"And who says I'm doing it for acknowledgement?"

He lets the question hang in the air for a moment, with the easy of confidence of someone who knows that they have worth and ability. Who doesn't feel like he has something to prove, not to a complete stranger.

"You're right. We're all just people. And people have survived as long as they have by helping each other. That's the reason behind what I find worth doing."