I have to say from the outset that not all prose can be transferred to the screen. - Andrei Tarkovsky

...art must must carry man's craving for the ideal, must be an expression of his reaching out towards it; that art must give man hope and faith. And the more hopeless the world in the artist's version, the more clearly perhaps must we see the ideal that stands in opposition - otherwise life becomes impossible! Art symbolises the meaning of our existence.

What is the essence of the director's work? We could define it as sculpting in time. Just as a sculptor takes a lump of marble, and, inwardly conscious of the features of his finished piece, removes everything that is not a part of it — so the film-maker, from a 'lump of time' made up of an enormous, solid cluster of living facts, cuts off and discards whatever he does not need, leaving only what is to be an element of the finished film, what will prove to be integral to the cinematic image.

It is obvious that art cannot teach anyone anything, since in four thousand years humanity has learnt nothing at all.