Who said "I bring not cruelty, but the end of all suffering."?

This quote is attributed to The Night King.

I bring not cruelty, but the end of all suffering. - The Night King

"I bring not cruelty, but the end of all suffering."

The Night King Kindness

"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."

"A good man treats his wife with respect."

"Kindness always comes back around."

"The power of a smile can change everything."

"Kindness is weakness to some. Not to me."