[Iroh was silent for a long moment, eyes wide with surprise. That... certainly explained a couple things. Like why he didn't want it going around that he was the Avatar. Or that he was from ten thousand years ago. Finally, he managed to find his voice again, and there was definitely awe in it.]

This is incredible... I never thought I would have such an honor in all my life. And I promise never to share this with anyone. It's your story to tell, not mine.

[Telling other peoples' stories that may not be widely known is primarily reserved for Zuko. And even those moments are far and few in between.]