Avengers: Infinity War - Thanos chuckled. “You mean the Chaos Emeralds? Because if that’s what you’re trying to keep me from getting, I’ve got three of them right here.”

My favorite part is Doctor Doom admitting that the way Peter put it isn't exactly wrong.

"One might think in such a way, But I would consider their power to hold the very fabric of time and space in their grasp with the Chaos emeralds. One could almost re-write a history of a whole universe with just a little bit of understanding the power these limitless jewels hold, almost like figuring out how a clock works".