Who said "I've discovered that acceptance is key to happiness."?

This quote is attributed to Rex.

I've discovered that acceptance is key to happiness. - Rex

"I've discovered that acceptance is key to happiness."

Rex Happiness

"I'm a dinosaur! RAWR!"

"Oh no, oh no, oh no, oh no, oh no!"

"I can't take the pressure!"

"Everything's gonna be okay, right?"

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."