In this interview Gubaidulina discusses her understanding of religion and the way in which it relates to her music, by means of symbolism and metaphor. In particular she speaks of her understanding of the Apocalypse as a book of light, greatly influenced by the writings of Fr Aleksandr Men. She talks about the symbolism of instruments in her work, notably percussion, which she sees as a way to the subconscious; her understanding of the role of modernism in music, and the way in which her work connects with this historical process; and also her use of the Fibonacci sequence. The relationship of her music to liturgy is discussed, as is the double path, apparently contradictory, of the artist who composes both liturgical and concert music. The experience of the composer during the profound changes in music during the 20th century, specifically as regards possible intersections between modernism and spirituality, are also discussed.