Knowing-- something-- of a truth. Knowing more then Sylar knows. "Mistakes are a part of learning. Do you know what the first thing a Firebender is taught when he begins to earnestly train for combat, rather then beauty or art?"

There is no Axel now; there is only Zuko; Zuko who has tiger's eyes, fierce and full of fury.

But he's not angry now. He is surprisingly cold, stating cool fact.

"We burn animals. We get used to the smell of fat, the collection of the grease on our lips. We learn what it is to put the scent of the worst agony a human can imagine-- out of our minds."

He tilts his head. "What will a city burning smell like, Gabriel?"