About the book: 2021 / P. A. Florensky is often called the “Russian Leonardo da Vinci.” It is difficult to list all the sectors of activity to which he contributed. These are mathematics, physics, philosophy, theology, biology, geology, iconography, electronics, aesthetics, archeology, ethnography, philology, hagiography, museum studies, not counting poetry and prose. Moreover, Florensky did a lot to develop a universal worldview based on the comprehension of these sciences. In this area, he made such discoveries and obtained results, the importance of which was appreciated only recently (for example, in cybernetics, semiotics, antiparticle physics). He himself wrote that his works would be in demand no earlier than in 50 years. Message letters are one of the oldest genres of literature. From letters found during excavations of ancient states, we learn about bygone civilizations and its people; the messages of the apostles form part of the Holy Scriptures. Letters to family from the camps 1933–1937. can be considered as the last stage of the work of priest Pavel Florensky. In them, he passes on the accumulated knowledge to his children, and through them to all people, and the main direction of their thought is the clan, the family as the bearer of eternity, as the main unit of human society. In these messages, the focus of all experiences is the family, or more precisely, the trinity of personality, family and clan. A personality formed, unique, but at the same time connected by thousands of threads with his family, and through it with Eternity, for “the past has not passed away.” In the family, the clan finds a balance of formed personalities, unmerged and indivisible; in the family, the experience of the clan is transferred from parents to children, so that they “do not fall out of the grooves of time.” Letters 1933–1937 form an integral work, which can be called genodicy - the justification of the clan, the family. Chaos can be resisted only by affirming the personality, absorbing the experience of its kind, listening to it, and the most important link in this is the experience received from parents by children. The publishing layout is saved in PDF A4 format.