Who said "Change is for the weak; I remain eternal and unchanging."?

This quote is attributed to Smaug.

Change is for the weak; I remain eternal and unchanging. - Smaug

"Change is for the weak; I remain eternal and unchanging."

Smaug Change

"I am fire. I am death."

"You have no idea what you're dealing with."

"I am armored above and below with iron scales and hard gems."

"My armor is like tenfold shields, my teeth are swords, my claws spears."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."