[Katara has decided that there is something wrong with your head or your world, she's not sure which] That's... really different. Where I'm... from [She can't bring herself to say 'world'] there are four elements. Water. Earth. Wind. Fire. Only the Avatar can master all four elements.

[But even if he is crazy, he's nice and they both still need to get out of the forest, so she'll just keep walking now.]

What are 'staves?'