Put in another way, this means that in every great revolutionary movement that is of world importance the idea of this movement must always be spread abroad through the operation of propaganda. The propagandist must never tire in his efforts to make the new ideas clearly understood, inculcating them among others, or at least he must place himself in the position of those others and endeavour to upset their confidence in the convictions they have hitherto held. In order that such propaganda should have backbone to it, it must be based on an organization. The organization chooses its members from among those followers whom the propaganda has won. That organization will become all the more vigorous if the work of propaganda be pushed forward intensively. And the propaganda will work all the better when the