Who said "I know you can do this if you try hard enough."?

This quote is attributed to Marge Simpson.

I know you can do this if you try hard enough. - Marge Simpson

"I know you can do this if you try hard enough."

Marge Simpson Motivation

"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 believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."