Who said "I believe in doing the right thing, even when it's hard."?

This quote is attributed to Marge Simpson.

I believe in doing the right thing, even when it's hard. - Marge Simpson

"I believe in doing the right thing, even when it's hard."

Marge Simpson Courage

"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."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."