Pavel Alexandrovich Florensky (1882-1937) - an outstanding Russian religious thinker, Orthodox philosopher, theologian, physicist, mathematician, engineer. In the book "Pillar and Statement of Truth. The experience of Orthodox theodicy" (1914) developed the ideas of the "philosophy of unity" B.C. Solovyov, developed the doctrine of Sophia as the basis of the meaningfulness and integrity of the universe, created a theory that combines research in the field of linguistics, art history, philosophy of culture, mathematics and physics.