This is a collection of works by and about the first two theoreticians of Russian Marxism: Georgii Valentinovich Plekhanov and Vladimir Il"ich Lenin. Grigorii Plekhanov (1856-1918), politician, Marxist philosopher, one of the founders of RSDRP (Russian Social-Democrat Party), was an opponent of the Bolshevik revolution of 1917. The volume includes works of modern Russian political scientists about the two Russian Marxists and their theories.