Even if Stalin were to be murdered tomorrow, and even if his successors were to repudiate Socialism, Socialism would not cease to be a danger, and the Russian Experiment, which has endured for more than twenty years in a country whose area equals one-fifth of the land surface of the earth, would still deserve the most careful study. The inexhaustable natural resources of Soviet Russia have provided her Rulers with a unique opportunity to prove the superiority of Socialism to Capitalism. It is therefore the duty not only of historians and economists, but of all who are concerned for the well-being of their fellow men, to study the history of the Russian experiment and to profit by the experience gained in the Russian laboratory.