Who said "To do so would require someone even more powerful than I."?

This quote is attributed to Thanos.

To do so would require someone even more powerful than I. - Thanos

"To do so would require someone even more powerful than I."

Thanos Power

"I am inevitable."

"The hardest choices require the strongest wills."

"Perfectly balanced, as all things should be."

"You should have aimed for the head."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."