I'm not sure what I just read. This book is totally unique. I kept trying to find symbolism or perhaps a parallel to another work of art. I felt like I wanted to take a class to study it. And I'll probably spend an inordinate amount of time in book forums trying to figure it out. Poetic, so poetic, yet sci-fi. I wanted to know more about the Agency and the Garden. What do they really represent? The management of time and time travel in this book was also unique to any other time slippage novels I've read. Strands of time were braided and our protagonists could travel up and down them to different points in time. However the concepts were kept very abstract. The story is actually told in letters back and forth between the two protagonists, though not necessarily the type of letter you write or type. This is where the author shines. The creativity is outstanding. Communicating through mediums perhaps like plants or animals? Now I'll have to research this! This book is not for everyone but it is not one I'll soon forget.