Who said "Real courage is doing the right thing even when it's hard."?

This quote is attributed to Butters Stotch.

Real courage is doing the right thing even when it's hard. - Butters Stotch

"Real courage is doing the right thing even when it's hard."

Butters Stotch Courage

"I'm not bad, I'm just drawn that way"

"Aw, hamburgers!"

"You're grounded, mister!"

"I have to go do my chores now"

"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."