Who said "Sometimes doing the right thing is hard."?

This quote is attributed to Kyle Broflovski.

Sometimes doing the right thing is hard. - Kyle Broflovski

"Sometimes doing the right thing is hard."

Kyle Broflovski Courage

"Dude, this is so messed up!"

"I'm not a jew, I'm a person!"

"Guys, we need to think about this logically"

"You guys are being totally unreasonable"

"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."