Who said "I believe in the power of imagination."?

This quote is attributed to Rex.

I believe in the power of imagination. - Rex

"I believe in the power of imagination."

Rex Imagination

"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?"

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."