From what little Azula understood about machines, it made sense to her that one might crave structure, but then again so did most intelligent humans so where did that leave her?

Losing a philosophical debate about humanity with a machine that's where.

"I suppose it is all a bit beyond me. But if you do figure out how to perfect humanity be sure to let the rest of us know would you? I find the levels of humanity on this train questionable at best."

On a sliding scale of humanlike people she'd met, there weren't many of them she'd rate high enough to consider humanity.