Probably because a lot of us didn't know how to take them seriously. My friend Korra and I talked about what was on the other side of that wall...but CERES really didn't want us to know.

[He doesn't argue with her and he's not hesitant in taking her hand. He's done this with Mars before, and knowing who Mercury really is definitely helps a lot. He's not afraid of what he thinks she's about to do.] I'm ready when you are. Let's go.