"There are plenty of bad editors who try to impose their own vision on a book"

This quote by Terri Windling is referring to the editing procedure of a book. It is suggesting that there are editors who try to alter the author's vision of the book to their own. This might be done by making modifications to the content, structure, or style of the book. This might be done without the author's consent or knowledge, which could result in a book that is not real to the author's original vision. This quote is a cautioning to authors to be aware of the capacity for bad editors to attempt to impose their own vision on a book. It is necessary for authors to be familiar with this and to make sure that they are dealing with an editor who appreciates their vision and wants to deal with them to develop the very best possible book.