This statement is saying that writing allows someone to express themselves, without being judged or criticized, in a way that is different from the accepted ideas and beliefs of society. Writing is a way for someone to express those feelings or beliefs that are different from what is socially accepted in a way that is seen as acceptable. In this way, writing almost mimics a form of schizophrenia, in which a person has difficulty distinguishing between what is real and what is imagined in their mind.