 A Wrinkle in Time by Madeline L. Engel is one of the single most important books in the history of science fiction. It's for children, not young adults. It's for children. This book should be introduced to children as soon as they can read, or read to them by their parents. It is simply the most perfect introduction to science fiction for young children that has ever been written. And I think that anyone who grew up with it would say the same. In my generation there must be countless scientists all over the world who started with A Wrinkle in Time and its sequels and who live with the vivid imagery and mind-expanding concepts from this book that propel them into further science fiction and into science. It introduces so many new ways of thinking to children and in such an entertaining and ethical way. It's about a young girl who saves her family from evil and in so doing saves the entire universe. It's your basic thrilling and frightening children's adventure quest that challenges a child's mind to think about what kind of world other people and other creatures must live in, worlds that are very different from the ones that we know. It even introduces the basics of modern physics, of relativity, of folding space and the ideas of more than three dimensions or less than three dimensions. I think that anyone who grew up with this book would agree with me and would recommend it just as highly. And if you have not read this book, get it and read it. Although it's written for very young children, I think that you will be truly astonished at how good it is and how so much of the imagery in this book will stick with you. I do have to say though that you should avoid any movie or television adaptations. Just, yeah.