This perversion of the ethical values soon crystallized into the all-dominating slogan of the Communist Party: THE END JUSTIFIES ALL MEANS. Similarly in the past the Inquisition and the Jesuits adopted this motto and subordinated to it all morality. It avenged itself upon the Jesuits as it did upon the Russian Revolution. In the wake of this slogan followed lying, deceit, hypocrisy and treachery, murder, open and secret. It should be of utmost interest to students of social psychology that two movements as widely separated in time and ideas as Jesuitism and Bolshevism _reached exactly similar results_ in the evolution of the principle that the end justifies all means. The historic parallel, almost entirely ignored so far, contains a most important lesson for all coming revolutions and for the whole future of mankind. There is no greater fallacy than the belief that aims and purposes are one thing, while methods and tactics are another. This conception is a potent menace to social regeneration. All human experience teaches that methods and means cannot be separated from the ultimate aim. The means employed become, through individual habit and social practice, part and parcel of the final purpose; they influence it, modify it, and presently the aims and means become identical. From the day of my arrival in Russia I felt it, at first vaguely, then ever more consciously and clearly. The great and inspiring aims of the Revolution became so clouded with and obscured by the methods used by the ruling political power that it was hard to distinguish what was temporary means and what final purpose. Psychologically and socially the means necessarily influence and alter the aims. The whole history of man is continuous proof of the maxim that to divest one’s methods of ethical concepts means to sink into the depths of utter demoralization. In that lies the real tragedy of the Bolshevik philosophy as applied to the Russian Revolution. May this lesson not be in vain.