Who said "If at first you don't succeed, try again."?

This quote is attributed to Ralph Wiggum.

If at first you don't succeed, try again. - Ralph Wiggum

"If at first you don't succeed, try again."

Ralph Wiggum Perseverance

"I'm in danger."

"Me fail English? That's unpossible."

"Eat my shorts."

"Ay caramba!"

"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."