In the book "Red Pyramid" the dad said something about fairness. What was it?

Carter was moaning as he was in Egypt and his father was making him wear smart (but very hot) clothing and he was feeling really sticky and hot so he asked his father why couldn't he wear shorts and a top and his father said people would judge him more harshly for being African/American and Carter said it wasn't fair and his father told him that fairness isn't always getting what you want as Carter wanted to wear light clothing but his father wasn't letting him because they will be judge on it - so this is what Carter felt was unfair