Here Tarkovsky is talking about the truth of art, its beauty and its spirituality, its cathartic, revelatory and redemptive powers . . .
“The beautiful is hidden from the eyes of those who are not searching for the truth, for whom it is contra-indicated. But the profound lack of spirituality of those people who see art and condemn it, the fact that they are neither willing or ready to consider the meaning and aim of their existence in any higher sense, is often masked by the vulgarly simplistic cry, ‘I don’t like it!’ ‘It’s boring!’ It is not a point that one can argue; but it is like the utterance of a man born blind who is being told about a rainbow. He simply remains deaf to the pain undergone by the artist in order to share with others the truth he has reached . . .
. . . Touched by a masterpiece, a person begins to hear in himself that same call of truth which prompted the artist to his creative act. When a link is established between the work and its beholder, the latter experiences a sublime, purging trauma. Within that aura which unites masterpieces and audience, the best sides of our souls are made known, and we long for them to be freed. In those moments we recognize and discover ourselves, the unfathomable depths of our own potential, and the furthest reaches of our emotions.”