"I don't think any good book is based on factual experience. Bad books are about things the writer already knew before he wrote them"

This quote by Carlos Fuentes recommends that good books are not based upon factual experience, however rather on the imagination of the writer. He indicates that bad books are written from the perspective of the writer's own experiences, which these experiences are not necessarily intriguing or interesting to the reader. Fuentes is suggesting that great books are those that are written from an innovative and imaginative viewpoint, rather than from an accurate one. He is motivating authors to explore their imaginations and develop stories that are special and fascinating. By doing so, authors can develop books that are satisfying and memorable for readers. Fuentes' quote is a suggestion that excellent books are those that come from the author's imagination, rather than from their own experiences.