Who said "Change is the only constant, even for the immortal."?

This quote is attributed to Eternals.

Change is the only constant, even for the immortal. - Eternals

"Change is the only constant, even for the immortal."

Eternals Change

"We have watched and guided humanity for thousands of years."

"The job we were created for is finally complete."

"Humanity has the capacity for both great good and terrible harm."

"We are eternal, but our time here is finite."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."