I'm used to divide good books in two categories: the first category includes nice books that are well written, with an interesting texture; they provide the reader with all the details leaving no space to my fantasy and my imagination. The second category of books put my mind in a new dimension, they help me to discover new ideas and emotions. "Yesterday" from Agota Kristof belongs to that category, it is written in a very essential way, with the minimal set of words, no a single paragraph can be removed, neither a single word without destroying it. If you think that reading a book is a different experience than watching a movie, this book is for you. The few words of "Yesterday" can drive you to discover new sensations, new emotions, and unknown places of your mind. In my opinion, it's definitively a very good book.