Who said "Change is the only constant in history."?

This quote is attributed to Indy.

Change is the only constant in history. - Indy

"Change is the only constant in history."

Indy Change

"It's not the years, honey, it's the mileage."

"Fortune and glory, kid."

"Snakes. Why'd it have to be snakes?"

"That's how we archaeologists tell time."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."