"Some of the Eldar didn't agree to come here. I'm not sure how they'd feel if we went and spruced up their homeland. I know even less about the peoples of distant lands. I am sure there are some who'd want to first ask Eru's counsel, too, though -" he waves a hand - "we might not be interpreting Eru correctly, if I do say so myself."
"Well, Valinor in a general sense, not necessarily in any specific aesthetic or politics or layout or anything. If there's somebody who objects to arbitrary plants being edible or the eventual availability of launderers or not having to keep everybody you know within arm's reach all the time lest something eat them I'd love to hear their arguments."
"CanI send you research notes occasionally? I would like to work on figuring out whether your magic has access to some kind of interpreter that allows it to do the same things we're doing with much less precise control, and if the answer is that it does, and we know the fundamental results that we're trying to achieve, your project would be one of understanding the function of the interpreter and possibly how it was created. I do not particularly expect this to work, but I think it's worth examining."
"Um, I'll look at the notes, sure, although based on that description I'm not particularly optimistic..."
"Would it be less weird if I were the only person who could cast spells?"
"...Maybe everybody is. Which would be a heck of an exploit, since in my home plane science isn't allowed and we've been doing a lot of science to magic."
"My universe has a lot of power structures that don't form a sensible hierarchy with each other. 'The universe' is what we call the thing that prohibits science, and it does it by, well, being the universe - it can make science unrewarding at best and counterproductive or lethal at worst. Here, it's not the universe and doesn't have being the universe privileges; but wizardry might run on something else that doesn't answer directly to the universe, at least outside its jurisdiction."
"We are eventually going to pardon Melkor, in exchange for his aid on a task no other could attempt, and the immediate aftermath of that attempt is unknown to us because mercy and a second chance cannot be granted with full knowledge. Many Years after that new lights will rise above Arda and new races will be born to it, and they will war, but through tragedy and horror some of the Elves will meet them and aid them, as will I, and eventually they will multiply and fill the whole world save Valinor, and have great and terrible kings and build great and terrible things."
"Melkor's pardon is inevitable unless you happen to find the means to break oaths; the problem that only he can fix is that there are people sworn to him who have orders right now to do harm, and he can resolve it by telling them they are free to go live their lives, and we must attempt to aid them. Melkor's pardon may be for the good anyway; we can pledge ourselves to better courses. The arrival of Men is not for three hundred Years. That seems enough time for you to be quite a disruptive force."