Who said "I have learned that change is the only constant."?

This quote is attributed to Thor Odinson.

I have learned that change is the only constant. - Thor Odinson

"I have learned that change is the only constant."

Thor Odinson Change

"I am of Asgard, and so much better than you."

"The only true battle is within oneself."

"A warrior must know when to fight and when to lay down arms."

"Family is not just blood—it is those who stand beside you."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."