The farthest distance in the world is not when I am by your side but you don't know that I love you, but when I find that I still love you but you are no longer by my side. In fact, we are all selfish. No matter how many people we have loved, no matter how happy or painful those days of loving or being loved are, in the end we find that we have not learned how to love others, but how to love ourselves more.