Who said "Change is the only constant we know."?

This quote is attributed to Sif.

Change is the only constant we know. - Sif

"Change is the only constant we know."

Sif Change

"I have waited lifetimes for this moment."

"A warrior's heart beats strongest in battle."

"We are bound by more than just duty."

"The past shapes who we become."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."