Who said "A mother's love is unconditional, even on the worst days."?

This quote is attributed to Marge Simpson.

A mother's love is unconditional, even on the worst days. - Marge Simpson

"A mother's love is unconditional, even on the worst days."

Marge Simpson Love

"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."

"I love my wife, but sometimes she drives me crazy."

"Love conquers all obstacles."

"Love is patient, love is kind."

"I'm not stupid, I'm just in love!"