Author J.K. Rowling will release a collection of essays Friday explaining why she decided to speak out against biological males who identify as women.

Rowling is known for her success in fantasy writing in publishing the Harry Potter series but will now publish her personal thoughts in her next book, The Women Who Wouldn’t Wheesht. The term “wheesht” is Scottish for “quiet down,” which the author said her friends attempted to do to her when she expressed to them that she found transgender women to be “dangerous” and “profoundly misogynistic.”