Kira Yamato and Athrun Zala in “Unfinished Business”

Kira Yamato

But Athrun, I understand what you're saying, but we don't want you fighting against Orb even with things the way they are now... and actually not only Orb, because Athrun, what is lost in pointless battle is gone and never returned.

Athrun Zala

I've had enough of your sanctimonious talk. You think you've got all the answers!? Or have you forgotten all the lives you've personally taken!?

Kira Yamato

Yes, I know; and that's why I'm so sick and tired of all of it.

Athrun Zala

Kira...

Kira Yamato

I don't want to kill any more, and I will not let others kill.