My Christian friend

I wrote this cuz I saw some of people here didn't respect each other. I have a female friend. She is my classmate. She is the only Christian in my class but we respect each other and we have a good relationship. Although we have different religion, we never argue about it. The only thing we believe that, we shouldn't judge the person from his/her religion, but his/her character or personality cuz human being were created as a good n a bad person. Nobody's perfect in this world. How can we live peacefully in this world if we don't respect each other????