Who said "Perseverance is the key to all doors"?

This quote is attributed to Grandpa Joe.

Perseverance is the key to all doors - Grandpa Joe

"Perseverance is the key to all doors"

Grandpa Joe Perseverance

Character in Charlie and the Chocolate Factory

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"Children should be seen and not heard."

"Time is the greatest gift of all."

"The greatest magic is believing in yourself."

"Candy is dandy, but liquor is quicker."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."