Avatar: The Last Airbender, Season 3

[after being judged by the masters and seeing their fire]

Zuko:
Their fire was beautiful. I saw so many colors, colors I've never imagined.

Aang:
Like firebending harmony.

Sun Warrior Chief:
Yes. They judged you, and gave you visions of the meaning of firebending.

Zuko:
I can't believe there are still living dragons. My Uncle Iroh said he faced the last dragon and killed it.

Sun Warrior Chief:
Actually, it wasn't a total lie. Iroh was the last outsider to face the masters. They deemed him worthy and passed the secret onto him as well.

Zuko:
He must have lied to protect them, so no one else would hunt them.

Aang:
All this time, I thought firebending was destruction. Since I hurt Katara, I've been too afraid and hesitant. But now I know what it really is... it's energy, and life.

Zuko:
Yeah. It's like the Sun, but inside of you. Do you guys realize this?

Sun Warrior Chief:
Well, our civilization is called the Sun Warriors... so yeah.