I am used to reading Asimov since my childhood. I started reading this as I've recently seen it pictured everywhere as his masterpiece. However, during the first part I have almost fallen asleep more than once. The second part of the book is the only one I am really enjoying reading, as it probably was the actual short story by Asimov himself. If that is that, I'm not sure I want to read the conclusion.
In addition, I can state without fear that the Italian translation somehow lacks in stylistic coherence even without having read the book in English yet. Professional bias ftw.