Who said "Imagination is the only limit to what you can achieve."?

This quote is attributed to Mr. Peanutbutter.

Imagination is the only limit to what you can achieve. - Mr. Peanutbutter

"Imagination is the only limit to what you can achieve."

Mr. Peanutbutter Imagination

"I'm just a simple dog trying to make it in Hollywood"

"Every time it seems like things are going great, something comes along and ruins it"

"You know what the key to happiness is? Not thinking about sad stuff"

"I'm an optimist. That's my thing"

"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."