The book's main statement about the nature of cinema is summarized in its claim that "the dominant, all-powerful factor of the film image is rhythm, expressing the course of time within the frame". It contains a great deal of poetry written by Tarkovsky's father
Arseny and some of Tarkovsky's personal writings on his own life and work, as well as lectures and discussions Tarkovsky had with
film history student Olga Surkova during the making of his film
Andrei Rublev. Surkova later became a professional critic and assisted Tarkovsky with writing
Sculpting in Time, for which he cited her as an inspiration. The book has commentary on each of Tarkovsky's seven major feature films and his complex relationship with the
Soviet Union. The final chapter, a discussion of his film
The Sacrifice, was written during the last weeks of his life. == Background ==