Many people look for external beauty, and they forget about feelings. This means that something or someone is beautiful, depending on the person who is looking.
People judge beauty in relationship to themselves.
Another example is in art. If I look at a painting by a famous artist, it is possible that I can't understand it and think it's ugly, but if another person such as a famous painter sees it, he will surely say that it is beautiful. I think people judge beauty just in relationship to themselves. If I wear casual clothes to my job, the people who like wearing formal clothes might say that I look ugly. Love is blind.