Who said "Hard work is the key to achievement."?

This quote is attributed to Marge Simpson.

Hard work is the key to achievement. - Marge Simpson

"Hard work is the key to achievement."

Marge Simpson Work

"I don't use cologne. I'm scent-free."

"Mmm, donuts."

"You know, Homer, I've learned that sometimes the best things in life are the simple ones."

"I believe in telling the truth, even when it's difficult."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."