I think it unwise to judge a person by his/her appearance. Because the person who own good looks does not represent that he/she also own a beauty soul.
Almost all people always judge the others by their appearance when they meet for the first time。Is there something wrong? yes, certainly, we all know that you shouldn't judge a book by its cover, the same as the person, you can't draw conclusions by your fist look.
And then , how can we try to avoid to make a bad judgement about somebody because of our first look ?First,get closer to the person which one you want to understand, let your eyes observe their normal life。Second, train your brain to think what kind of people they are。 finally,judge by your heart, are they still the same kind of people in your brain when you met them the first time?
We know, we always busy in studying, working, traveling… we have not so much time in knowing about someone,so that we usually get wrong judgement by our eyes, I mean ,if you want to make friend with someone,don't jump to a derision simply,spend more time in understanding