Good quote about fairness?

So I am part of a Dance team that is based around clical ballet. I recently was asked to perform a solo dance for competition, which is a huge honor. But there is a girl who is always jealous of me, and she is ten times worse than me and older than me. So her mom went and complained that I got a solo and I guess convinced my Instructor to give her a solo. I was wondering if y'all knew any quotes that talked about fairness.... Getting something/achieving your goals the fair way.... Cheaters/complainers being fake or bad or whatever.... That would be amazing.