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

This quote is attributed to Sulley.

Change is the only constant in life. - Sulley

"Change is the only constant in life."

Sulley Change

"I'm not a human, but I can still care about what happens to you."

"Sometimes the scariest thing is realizing someone means more to you than you thought."

"You can't help who you care about."

"Being big and blue doesn't mean you have all the answers."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."