"What gives you a right to live when they're not?" It doesn't look like the spirits plan on leaving, because they're still there and still talking.

"They didn't choose to die for you," the young woman said with a pitiless voice.

Aang hugs his knees tighter and keeps his eyes squeezed shut. "It is hard. It is. But I can't show it, because everyone needs me to be strong. I'm sick of being strong when I just want to be sad. Who thought it was such a good idea to make a little kid in charge of saving everyone?"

He's never said it out loud before, the growing resentment of all the responsibility on his shoulders. He had just accepted it before, but after nearly eleven months of being treated like a normal kid, he sees the discrepancy and the unfairness of it all. He didn't dare complain about unfairness after seeing what it had done to the Air Nomads, but now he's thinking about it again, and not just the unfairness of not being able to play with the other boys in the Temple. He sees the unfairness of all the adults he met expecting him to either save the world, shut up, or die. He sees the unfairness of it taking him being taken to another world before an adult tried to take care of him. He sees the unfairness and he's sick of it.