It is normal for the square to do not understand the cube. He is missing one dimension.
Open minded people usually are much happier than those who are not. Prejudice are sometimes stoppingus from discovering amazing things, meeting amazing people and doing some great things.
Those who think that they already know much about other people and things, usually bad things, forever live in their square. They think they know everything, but they do not know anything.
If you are one of those people, here are a couple advices for you, they can help you a lot
First of all, even if you are sure that you are not going to like someting, give it a chance, do not expect anything, just give it a chance. Maybe, it will surprise you. You can never know.
Second, change your opinion, when you are wrong. When you see that something is not as you were thinking it is, change your opinion about it. It is okay to make mistakes, we all are making mistakes. Give yourself a chance, and give a chance to others.
Third, ask. Always ask. Maybe, you are wrong, and you od not even know that you are wrong, because there are some facts, that you do not know about. Maybe, you have the wrong opinion, because tou od not know everything.
Here are some quotations about prejudice.
Sto se predrasuda tice, kad je neko glup ne mozes mu to ni dokazati