He doesn't personally know much about magic, just that it sure as hell exists. The Asgardians sure have it, Wanda sure has it. The Stones were next best thing to magic, he thinks.

"Would it upset you if I told her?" Neither a confirmation nor a denial. He doesn't look to Loki for an answer, instead taking measured pacing steps around the space, looking for anything that strikes him as out of place or alarming.