Forty years ago, Jep Gambardella (Toni Servillo ) wrote a book that became an instant best-seller and is still read and more or less remembered—by some as a frothy and irrelevant intellectual joke, by others as a life-changing and profound work of literature. What Gambardella himself is reminded of when people mention the book is that he hasn’t written another one since, not for lack of wanting to but more for lack of time