Who said "Change is the only constant in existence"?

This quote is attributed to Ungaretti.

Change is the only constant in existence - Ungaretti

"Change is the only constant in existence"

Ungaretti Change

Poet Italian 1888–1970

"I will sing the joy of my tormented life"

"The only certainty is that nothing is certain"

"In the middle of life we are in death"

"Poetry is the art of expressing what cannot be said"

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."