Andrey Tarkovsky said this quote

“ What is this film (Mirror) about?It is about a Man. No, not the particular man whose voice we hear from behind the screen, played by Innokentiy Smoktunovsky. It's a film about you, your father, your grandfather, about someone who will live after you and who is still you. About a Man who lives on the earth, is a part of the earth and the earth is a part of him, about the fact that a man is answerable for his life both to the past and to the future. You have to watch this film simply, and listen to the music of Bach and the poems of Arseniy Tarkovsky; watch it as one watches the stars, or the sea, as one admires a landscape. There is no mathematical logic here, for it cannot explain what man is or what is the meaning of his life. (Sculpting in Time) ”