Who said "You're never too old to learn somethin' brand new."?

This quote is attributed to Mickey Mouse.

You're never too old to learn somethin' brand new. - Mickey Mouse

"You're never too old to learn somethin' brand new."

Mickey Mouse Education

"Hot dog!"

"Oh boy!"

"Gosh!"

"That's swell!"

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."