[Loki chuckles and nods.]

Fine. Alright. Another try.

[He sobers up instantly.]

Captain Rogers, I just wanted to say that I have a better understanding of what your city went through when I led the Chitauri invasion. Being on the other side of things in San Francisco put things into a perspective I couldn't fully see, before. I...

[Oh, this is actually very difficult if he's taking this seriously. Even if it isn't to Rogers' face.]

I am deeply sorry, though I know that will never be truly sufficient. If I am able to go home, I will...do. Something.

[Loki squints.] I should probably figure out something to offer if I'm going to offer anything.