ˈʌp tuː, ænd ɪŋklˈuːdɪŋ, hɪz fˈɪlm mˈɪɹɚ, tɑːɹkˈɑːvski fˈoʊkəst hɪz sˌɪnɪmˈæɾɪk wˈɜːks ˌɔn ɛksplˈoːɹɪŋ ðɪs θˈiəɹi.
Up to, and including, his film Mirror, Tarkovsky focused his cinematic works on exploring this theory.