Who said "I've learned that some prices cannot be paid in gold."?

This quote is attributed to Theon Greyjoy.

I've learned that some prices cannot be paid in gold. - Theon Greyjoy

"I've learned that some prices cannot be paid in gold."

Theon Greyjoy Money

"I am the Prince of Winterfell. I have no need to prove myself to anyone."

"What is dead may never die."

"You can't marry her. You're promised to me."

"I'm a Greyjoy. We do not sow."

"Money is important, but it's not everything"

"Money doesn't buy happiness, but it buys things that make you forget you're unhappy."

"Money isn't everything."

"Money is meaningless without purpose."