The book "Eternity is Eternal Because It is Carefree. Andrei Monastyrsky and the Collective Actions Group" is based on the long-term correspondence between the philosopher and poet Viktor Agamov-Tupitsyn and the poet, artist, founder of the Collective Actions group and the main theorist of the Moscow conceptual school Andrei Monastyrsky (they met in 1969). The content of the book covers not only the actions of the Collective Actions group, but also tells about the impact that Monastyrsky and his colleagues had and continue to have on the artistic environment in Moscow and beyond. The book provides an opportunity to get acquainted with the theoretical texts and poems of Andrei Monastyrsky and Viktor Agamov-Tupitsyn, as well as with their interpretations of various artistic and socio-political events that took place during the period of correspondence. The publication is illustrated with photographs and author's collages from the archives of Viktor Agamov-Tupitsyn and Margarita Masterkova-Tupitsyna, as well as from the archives of Andrei Monastyrsky and the Collective Actions group. Many of the materials presented in the book are published for the first time.