When less than everything has been said about a subject, you can still think on further. The alternative is for the audience to be presented with a final deduction (...) no effort on their part. What can it mean to them when they have not shared with the author the misery and joy of bringing an image into being?
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.
Andrei Tarkovsky