It may be said that the whole of Stalinism, taken on the theoretical plane, grew out of the criticism of the theory of the permanent revolution as it was formulated in 1905. To this extent the exposition of this theory, as distinct from the theories of the Mensheviks and Bolsheviks, cannot fail to enter into this book, even if in the form of an appendix.
Simula sa teoretikal na antas ang bawat maliit na punto ng “Stalinismo” ay lumabas mula sa kritisismo ng teorya ng permanenteng rebolusyon ayon sa pagkakabuo nito noong 1905, ang pagpapaliwanag ng nasabing teorya, ng mga Menshebik at Bolshebik, ay malinaw na kasama sa librong ito, kahit man lang bilang apendiks.