Philosophers (Portrait of Pavel Florenskiy and Sergey Bulgakov).

Bulgakov, Sergei Nikolayevich (1871-1944) economist, philosopher, theologian, since 1918, a clergyman. In 1923 he immigrated from Russia, since 1925 – professor and dean of the Russian Theologian Institute in Paris; he was one of the leaders of the Russian Students Christian Movement.
Florensky, Pavel Alexandrovich (1882-1943) theologian, philosopher, mathematician, physicist, engineer, author of many theoretical works in the subjects. In 1933, was arrested by communists and then shot