"It's true. So maybe we do forget. Or maybe we know other people would think we're crazy and never talk about it."

There's little humor in his voice; it's perhaps a joke, but a sincere, factual one.

"Uncle, can you imagine if I went back and spoke about something like this as Fire Lord? I'd be committed! And if you or Azula spoke of these things, too, the whole royal family would be dishonored!"

He speaks with a hint more heat, a bit more desperation, gesturing as he talks. He's clearly given this a lot of thought, though maybe questionable if it's productive thought or not. He's spent many a wakeful night turning over every angle.