Who said "Your voice matters; don't be afraid to speak up."?

This quote is attributed to Mickey Mouse.

Your voice matters; don't be afraid to speak up. - Mickey Mouse

"Your voice matters; don't be afraid to speak up."

Mickey Mouse Courage

"Hot dog!"

"Oh boy!"

"Gosh!"

"That's swell!"

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."