Disclaimer: Avatar the Last Airbender copyright Dante Dimartino, Brian Konietzko and Nickelodeon Studios.
"Humans are such curious creatures. Gifted by fate with such ardent flesh, exquisitely sentimental; yet you prefer to hide behind masks."
"Masks?"
"The human face is, after all, nothing more or less than a mask; pliable flesh able to reflect each affliction truthfully from simple minor physical discomfort to devastating emotional turmoil. Yet you spend extraordinary energy morphing your gift into lies, hiding the truth of your emotions behind facades. You've corrupted your gift. Transformed it into a mask used to hide your deeper, truer selves from the world." Koh sneered. "What a pretty way to lie to each other."
