Who said "You cannot defeat what has already conquered death."?

This quote is attributed to The Night King.

You cannot defeat what has already conquered death. - The Night King

"You cannot defeat what has already conquered death."

The Night King Power

"The living are not my concern."

"Death is the enemy. And we are joining the fight against it."

"Winter came for House Umber."

"I am the night."

"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."