Short answers, pulled from the story.
Archimandrite Gabriel published the first history of Russian philosophy in 1840. Scholars continue to debate whether this tradition began in the eleventh century or during the reign of Peter the Great in the early eighteenth century.
Metropolitan Hilarion wrote The Word of Law and Grace which some call the first ancient Russian philosophical work. This text circulated alongside translated Byzantine monuments such as The Bee and Dioptra by Philip the Hermit among scribes.
Vladimir Solovyov lived between 1853 and 1900 and is considered the central figure of Russian philosophy by his contemporaries. He proposed positive total-unity headed by God while viewing good as will truth as reason and beauty as feeling.
Georgy Plekhanov and Vladimir Lenin developed Marxist philosophy before the October Revolution began in 1917. Dialectical materialism divided nature into matter and consciousness while distinguishing historical processes through successive formations including primitive communal systems slave systems feudalism capitalism and socialism.
Systematic Research Methodology appeared in a dictionary published in Minsk in 2003. The Moscow Methodological Circle created by Georgy Shchedrovitsky offered original ways out of postmodernism during this period.