How does Solzhenitsyn view Soviet Communism?

Solzhenitsyn believes that the Bolshevik government that seized power in Russia in 1918 was neither a natural sequel to Czarist autocracy (as many Western scholars argued) nor an historically necessary evolution (as Marxist theoreticians asserted). To him Soviet Communism was an aberration caused by a coincidence of extraordinary events in the first two decades of the century.