James
Now see, Min was at an impasse. She could ask this person about his funky darkness vibes and reveal herself to be looking into such matters, or she could not do that. Well, he had already clocked her blatant usage of dark magic so why not say it outright?

To the other person present, Min would have just stood there like a mannequin for half a minute before speaking.

*"I was wondering if you knew anything about __darkness__. No offense, but you seem to be steeped in it."*
Ernie
"What are you talking about? Darkness? Just about everyone has darkness inside them, so there is nothing strange about that."

He spoke matter-of-factly as he paced around with the question... And the accusation. 

"What is it about darkness that has you so curious?"

He stopped to await the answer of his conversation partner. Goofy as he had seemed before, he was strangely not giving away much in terms of body language or other visual tells.
James
"I wish to understand the mechanisms that cause it to manifest beyond ourselves, why Heartless cover worlds in it."

Min usually attempted to maintain an unaffected and utterly neutral demeanor as well, but she could never hide her feelings subtly poking through as her unease did now.
Ernie
"Oh, that's easy to explain," The man in the white robe started just as the wind picked up. Dead leaves began to scatter and and fly about the place. For just a moment, the man in white was obscured from view. When the things die down, he is gone entirely.

Or so it seems. Now standing behind the unnamed Minuit, the stranger in white, stands dangerously close behind her as he begins to clue her in.

"Darkness and Light are constantly in flux. It Ebbs and flows. If you are focused on Darkness, then I can enlighten you."

His question had an undertone to it. A warning perhaps? 

"So, what type of external manifestation comes to mind?"
James
Minuit quickly turned around with a slight jump in response to the stranger's sudden shift in location. She took a step back and furrowed her brow as she began speaking again.

*"Well. The darkness between worlds and within dark corridors for one. If darkness is naturally within our hearts, why do we need protection while immersed in it?"*
Ernie
Unfortunately, as she would turn to face the stranger in white, he would once more disappear. Instead of behind the woman, he sits idly above in a tree kicking his legs. Carefree and undaunted with the question at hand.

"I mean, doesn't too much of anything overwhelm you? Too much food hurts your stomach and makes you sluggish. Too much water causes you to drown."

He spouted simple concepts that even a child should understand. He acted as if he was not trying to make a comparison to things that end whole worlds.

"Too much Darkness that you are not prepared for should consume you. Your fault for being weak."

He leaned dangerously far back as he defied gravity's call to greet the earth below. Despite the overall attitude, his tone was not light in the slightest. Unapologetic and invoking a sense of doom and inevitability.

"Light isn't so different. If you aren't seeking it, imagine being bathed in it as if sitting under a waterfall threatening to crush you into conformity."