(While in the tunnels)
Aang: I met with this guru who was supposed to teach me how to master the Avatar State and control this amazing power. But to do that, I had to let go of someone I loved... and I just couldn't.
Iroh: Perfection and power are overrated. I think you were wise to choose happiness and love.
Aang: But what if we can't beat Azula? Without the Avatar State, what if I'm not powerful enough?
Iroh: I don't know the answer. Sometimes life is like this dark tunnel: You can't always see the light at the end of the tunnel, but if you keep moving... (Reaches the end of the tunnel) You will come to a better place.