[Ivar understands immediately. He knew Ragnar's greatest weakness had always been his children. No matter that he wanted to show mercy, he hadn't been able to grow through with it. His voice is hard as he replies.]

I did hate you for that. And for other things.

[Ivar didn't have the heart to twist the knife further and tell him how he'd abandoned his sons for ten long years, only to come strolling back into their lives practically on a whim. Then his eyes and voice both soften.]

But you gave me purpose when I had none, showed me that I had potential beyond what I thought I was, and I'll always love you for that.