Who said "All life ends. I simply hasten the inevitable."?

This quote is attributed to The Night King.

All life ends. I simply hasten the inevitable. - The Night King

"All life ends. I simply hasten the inevitable."

The Night King Death

"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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."