Who said "Life teaches us that change is the only constant."?

This quote is attributed to Bing Bong.

Life teaches us that change is the only constant. - Bing Bong

"Life teaches us that change is the only constant."

Bing Bong Change

"I'm Bing Bong, Riley's imaginary friend! Nice to meet you!"

"Imagination is what makes life worth living."

"You can't fake being happy when you're really sad inside."

"Sometimes the best memories are the ones that make you laugh and cry at the same time."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."