Who said "I do not dream of conquest; conquest is already mine."?

This quote is attributed to The Night King.

I do not dream of conquest; conquest is already mine. - The Night King

"I do not dream of conquest; conquest is already mine."

The Night King Dreams

"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."

"This is going to be a great show!"

"Dreams are what make life worth living."

"Never stop dreaming big."

"Dreams are what keep us going."