Although I have not finished reading this fascinating book, I am finding it most interesting. Written in 1859 and unedited, this book does bring a deep insight into Charles Darwin's mind and the very scientific way that he went about his research. I deliberately chose this facsimile edition so that I could read Charles Darwin's own words, as opposed to a modern editor's. In these days of modern communication and the ability to share ideas globally and instantly, we may tend to forget how relatively isolated scientists in the mid 19th century were; their efforts are all the more creditable for this. I am also pleased to have been able to buy this book in hardback, as it makes it far more enjoyable to read and to keep.