Who said "Change is the only constant in this world."?

This quote is attributed to Glenn Quagmire.

Change is the only constant in this world. - Glenn Quagmire

"Change is the only constant in this world."

Glenn Quagmire Change

"Giggity!"

"Allllright!"

"You gotta live life to the fullest, giggity goo!"

"Love is just giggity waiting to happen."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."