Who said "My sister's the smart one."?

This quote is attributed to Bart Simpson.

My sister's the smart one. - Bart Simpson

"My sister's the smart one."

Bart Simpson Gratitude

"Eat my shorts!"

"Ay caramba!"

"Don't have a cow, man."

"Cowabunga!"

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"