Everyone is different but we are all really the sa

This made me think of something my son had said, he has a birth mark on his neck which subjected him to being bullied. He decided to have it removed by laser treatment. During the period between the first and second sessions he turned to me and said "mum why do people look at me and says that I am not normal just because I have something that makes me look different, when we are all made them same inside" how true are the words of a child and he is only 9 why are we so quick to judge