I am from Turkey(somewhere between MiddleEast and Europe). I have been known as a fast reader all my life.( I can read more than 200 pages an hour in Turkish, 150 in English, 100 in German ). It was one of those days when I was used to reading 1000 page books in a few hours, when I came across this book. It took me a full 2 days, unbelievable for a book of size 300 pages. Basically it is a book written on a space pilot, who returns to Earth after a 10 year journey to a different star; meanwhile 120 years had passed in Earth time. It is not a book that you can read 10 or 20 pages a day.The first chapter is the definitive one : if you can manage to read it (app. 70 pages ) at one grasp, you will love it; if not, you will go on thinking that Solaris is the best book written by Lem. For me it is this book. In Solaris Lem was looking at a planet level, in this book he is looking at an individual human level. Lem is my favorite writer, and I love all of his writings. Lem has created two space pilots : Ijon Tichy and Pirx the Pilot. The adventures of Ijon Tichy are more amusing and eventful, Pirx on the other hand relatively uneventful and serious. This book is much more closer to the adventures of Pirx, than Tichy. If you get this book and love it, I will suggest that you get Eden too.