Who said "The only constant in life is that you're always learning."?

This quote is attributed to Daffy Duck.

The only constant in life is that you're always learning. - Daffy Duck

"The only constant in life is that you're always learning."

Daffy Duck Education

"Thufferin' succotash! That's the most ridiculous thing I've ever heard!"

"Life's too short to be serious all the time - you gotta laugh!"

"Love is just a word until you find someone who makes it mean something real."

"The secret to happiness is not taking yourself too seriously."

"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."