Pavel Alexandrovich Florensky (also P.A. Florenskiĭ, Florenskii, Florenskij, Russian: Па́вел Алекса́ндрович Флоре́нский) (January 21 [O.S. January 9] 1882 – December 1937) was a Russian Orthodox theologian, priest, philosopher, mathematician, physicist, electrical engineer, inventor and Neomartyr.
Early life 
Pavel Aleksandrovich Florensky was born on January 21, 1882, into the family of a railroad engineer, (Aleksandr Florensky) in the town of Yevlakh in Elisabethpol Governorate (in present-day western Azerbaijan). His father came from a family of Russian Orthodox priests while his mother Olga (Salomia) Saparova (Saparyan, Sapharashvili) was of the Tbilisi Armenian nobility. His maternal grandmother Sofia Paatova (Paatashvili) was from Sighnaghi, Georgia. Florensky "always searched for the roots of his Armenian family" and noted that they're coming from Karabakh.
After graduating from Tbilisi gymnasium in 1899, Florensky underwent a religious crisis caused by an awareness of the limits and relativity of rational knowledge and decided to construct his own solution on the basis of mathematics. He entered the department of mathematics of Moscow State University and studied under Nikolai Bugaev, and became friends with his son, the future poet and theorist of Russian symbolism, Andrei Bely. He also took courses on ancient philosophy. During this period the young Florensky, who had no religious upbringing, began taking an interest in studies beyond "the limitations of physical knowledge..."  In 1904 he graduated from Moscow State University and declined a teaching position at the University: instead, he proceeded to study theology at the Ecclesiastical Academy in Sergiyev Posad. During his theological studies there, he came into contact with Elder Isidore on a visit to Gethsemane Hermitage, and Isidore was to become his spiritual guide and father. Together with fellow students Ern, Svenitsky and Brikhnichev he founded a society, the Christian Struggle Union (Союз Христиaнской Борьбы), with the revolutionary aim of rebuilding Russian society according to the principles of Vladimir Solovyov. Subsequently he was arrested for membership in this society in 1906: however, he later lost his interest in the Radical Christianity movement.
Intellectual interests 
During his studies at the Ecclesiastical Academy, Florensky's interests included philosophy, religion, art and folklore. He became a prominent member of the Russian Symbolism movement, together with his friend Andrei Bely and published works in the magazines New Way (Новый Путь) and Libra (Весы). He also started his main philosophical work, The Pillar and Ground of the Truth: an Essay in Orthodox Theodicy in Twelve Letters. The complete book was published only in 1914 but most of it was finished at the time of his graduation from the academy in 1908.
According to Princeton University Press: "The book is a series of twelve letters to a "brother" or "friend," who may be understood symbolically as Christ. Central to Florensky's work is an exploration of the various meanings of Christian love, which is viewed as a combination of philia (friendship) and agape (universal love). He describes the ancient Christian rites of the adelphopoiesis (brother-making), which joins male friends in chaste bonds of love. In addition, Florensky was one of the first thinkers in the twentieth century to develop the idea of the Divine Sophia, who has become one of the central concerns of feminist theologians."
After graduating from the academy, he married Anna Giatsintova, the sister of a friend, in August 1910, a move which shocked his friends who were familiar with his aversion to marriage. He continued to teach philosophy and lived at Troitse-Sergiyeva Lavra until 1919. In 1911 he was ordained into the priesthood. In 1914 he wrote his dissertation, About Spiritual Truth. He published works on philosophy, theology, art theory, mathematics and electrodynamics. Between 1911 and 1917 he was the chief editor of the most authoritative Orthodox theological publication of that time, Bogoslovskiy Vestnik. He was also a spiritual teacher of the controversial Russian writer Vasily Rozanov, urging him to reconcile with the Orthodox Church.
Period of Communist rule in Russia 
After the October Revolution he formulated his position as: "I have developed my own philosophical and scientific worldview, which, though it contradicts the vulgar interpretation of communism... does not prevent me from honestly working in the service of the state." After the Bolsheviks closed the Troitse-Sergiyeva Lavra (1918) and the Sergievo-Posad Church (1921), where he was the priest, he moved to Moscow to work on the State Plan for Electrification of Russia (ГОЭЛРО) under the recommendation of Leon Trotsky who strongly believed in Florensky's ability to help the government in the electrification of rural Russia. According to contemporaries, Florensky in his priest's cassock, working alongside other leaders of a Government department, was a remarkable sight.
In 1924, he published a large monograph on dielectrics. He worked simultaneously as the Scientific Secretary of the Historical Commission on Troitse-Sergiyeva Lavra and published his works on ancient Russian art. He was rumoured to be the main organizer of a secret endeavour to save the relics of St. Sergii Radonezhsky whose destruction had been ordered by the government.
In the second half of the 1920s, he mostly worked on physics and electrodynamics, eventually publishing his paper Imaginary numbers in Geometry («Мнимости в геометрии. Расширение области двухмерных образов геометрии») devoted to the geometrical interpretation of Albert Einstein's theory of relativity. Among other things, he proclaimed that the geometry of imaginary numbers predicted by the theory of relativity for a body moving faster than light is the geometry of the Kingdom of God. For mentioning the Kingdom of God in that work, he was accused of agitation by Soviet authorities.
1928-1937: Exile, imprisonment, death 
In 1928, Florensky was exiled to Nizhny Novgorod. After the intercession of Ekaterina Peshkova (wife of Maxim Gorky), Florensky was allowed to return to Moscow. On the 26 February 1933 he was arrested again, on suspicion of engaging in a conspiracy with Pavel Gidiulianov, a professor of canon law who was a complete stranger to Florenskiy, to overthrow the state and restore with Nazi assistance a fascist monarchy. He defended himself vigorously against the imputations until he realized that by showing a willingness to admit them, though false, he would enable several acquaintances to resecure their liberty. He was sentenced to ten years in the Labor Camps by the infamous Article 58 of Joseph Stalin's criminal code (clauses ten and eleven: "agitation against the Soviet system" and "publishing agitation materials against the Soviet system"). The published agitation materials were the monograph about the theory of relativity. His manner of continuing to wear priestly gard annoyed his employers. The state offered him numerous opportunities to go into exile in Paris, but he declined them.
He served at the Baikal Amur Mainline camp, until 1934 when he was moved to Solovki, there he conducted research into producing iodine and agar out of the local seaweed. In 1937 he was transferred to Saint Petersburg (then known as Leningrad) where he was sentenced by an extrajudicial NKVD troika to execution. According to a legend he was sentenced for the refusal to disclose the location of the head of St. Sergii Radonezhsky that the communists wanted to destroy. The Saint's head was indeed saved and in 1946, the Troitse-Sergiyeva Lavra was opened again. The relics of St. Sergii became fashionable once more. The Saint's relics were returned to Lavra by Pavel Golubtsov, later known as archbishop Sergiy.
Official Soviet information stated that Florensky died December 8, 1943 somewhere in Siberia, but a study of the NKVD archives after the dissolution of the Soviet Union have shown that information to be false. Florensky was shot immediately after the NKVD troika session in December 1937. Most probably he was executed at the Rzhevsky Artillery Range, near Toksovo, which is located about twenty kilometers northeast of Saint Petersburg and was buried in a secret grave in Koirangakangas near Toksovo together with 30,000 others who were executed by NKVD at the same time.
See also 
- Flight from Eden "d0e2864"
- On the 9th of January according to the Julian calendar.
- From the article "On the Road to a Unified World View: Priest Pavel Florensky--theologian, philosopher and scientist" by S.S. Demidov and C.E. Ford in the book Mathematics and the Divine: A Historical Study, edited by Teun Koetsier and Luc Bergmans, published in English by Elsevier Science in 2005
- Oleg Kolesnikov. "Pavel Florensky".(Russian)
- Pavel V. Florensky; Tatiana Shutova. "Pavel Florensky". Nashe Nasledie (Russian)
- Леонид Фридович Кацис, Кровавый навет и русская мысль: историко-теологическое исследование дела Бейлиса, Мосты культуры, 2006, 494 c., c. 389
- Salt of the Earth by St. Paul Florensky
- "The Pillar and Ground of the Truth: an Essay in Orthodox Theodicy in Twelve Letters". Princeton University Press.
- Avril Pyman,Pavel Florensky: A Quiet Genius: The Tragic and Extraordinary Life of Russia’s Unknown da Vinci,Continuum International Publishing Group, 2010 p.86.
- Avril Pyman, pp.154ff.
- Antonio Maccioni, "Pavel Aleksandrovič Florenskij. Note in margine all'ultima ricezione italiana", eSamizdat, 2007, V (1-2), pp. 471-478 Antonio Maccioni. "Pavel Aleksandrovic Florenskij" (in Italian).
- (Russian) Site devoted to Florensky
- (Russian) - Biography
- (Russian) - Church biography
- (Italian) - Biography, by Abate Herman and Padre Damascene
- (English) The Pavel Florensky School of Theology and Ministry
- (Italian) DISF: P.A. Florenskij - Voice by N. Valentini
- (Italian) Paper about some Florenskij's book
- (Italian) Florenskij in Italy - Article by A. Maccioni
- (Greek) Page devoted to Florenskij
- Florensky, Pavel (2004). The Pillar and Ground of the Truth: An Essay in Orthodox Theodicy in Twelve Letters. Princeton, New Jersey: Princeton University Press. ISBN 978-0-691-11767-6.
- Florensky, Pavel (1999-02-13). Salt of the Earth (The Acquisition of the Holy Spirit in Russia Series, Vol. 2). Saint Herman Press. ISBN 0-938635-72-7.
- Florensky, Pavel (1996). Iconostasis. Crestwood, New York: St. Vladimir's Seminary Press. ISBN 0-88141-117-5.
- Florensky, Pavel (2006-08-15). Beyond Vision: Essays on the Perception of Art. London: Reaktion Books. ISBN 978-1-86189-307-9.
- Florensky, Pavel. "Onomatodoxy as a Philosophical Premise (excerpts)". A. F. Losev page. Retrieved 2007-09-04.
- "Pavel Florensky on Brotherhood Rite" (translated from Russian by Fr. German Ciuba). Gay.ru. Russian National GLBT Center. Archived from the original on 2007-05-18. Retrieved 2007-09-04.
- Titova, Irina (2002-10-01). "'Russian da Vinci' May Be Among Remains". St. Petersburg Times. p. 73. Archived from the original on 2007-09-28. Retrieved 2007-09-04.
- "Pavel Florensky's House - Sergiev Posad". Golden Ring of Russia. 2007-02-14. Retrieved 2007-09-04.
- Leach, Joseph H. J. (Fall 2006). "Parallel Visions - A consideration of the work of Pavel Florensky and Pierre Teilhard de Chardin". Theandros 4 (1). Retrieved 2007-09-04.
- Rhodes, Michael C. (Spring 2005). "Logical Proof of Antinomy: A Trinitarian Interpretation of the Law of Identity". Theandros 2 (3). Retrieved 2007-09-04.
- Berdyaev, Nikolai (February 1917). "Khomyakov and Fr. Florensky" (reprint, translation from Russian). Journal Russkaya Mysl (257). Retrieved 2007-09-04.
- Steineger IV, Joseph E. (Spring/Summer 2006). "Cult, Rite, and the Tragic: Appropriating Nietzsche's Dionysian with Florenskii's Titanic". Theandros 3 (3). Retrieved 2007-09-04.
- Bird, Robert. "The Geology of Memory: Pavel Florensky’s Hermeneutic Theology". equestrial.ru. Retrieved 2007-09-04.
- Seiling, Jonathan (September 2005). "Kant's Third Antinomy and Spinoza's Substance in the Sophiology of Florenskii and Bulgakov" (RTF document). Florensky Conference. Archived from the original on 2009-10-26. Retrieved 2007-09-04.
- Reardon, Patrick Henry (1998-09-01). "Truth Is Not Known Unless It Is Loved: How Pavel Florensky restored what Ockham stole" (fee required). Books & Culture. Christianity Today. Retrieved 2007-09-04.
- Dvoretskaya, Ekaterina. "Personal approach to Symbolic reality". crvp.org. Council for Research and Values in Philosophy. Retrieved 2007-09-04.