Who said "Change is the only constant in this world."?

This quote is attributed to Catelyn Stark.

Change is the only constant in this world. - Catelyn Stark

"Change is the only constant in this world."

Catelyn Stark Change

"The north remembers."

"A mother's love is fiercer than any sword."

"Winter is coming, and we must be prepared."

"Family is everything."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."