In every development, just or false, real or imaginary, collective or individual, it is always the first step, the first act that is the most difficult. That step once taken, the rest follows naturally as a necessary consequence. The difficult step in the historical development of this terrible religious insanity which continues to obsess and crush us was to posit a divine world as such, outside the world. This first act of madness, so natural from the physiological point of view and consequently necessary in the history of humanity, was not accomplished at a single stroke. I know not how many centuries were needed to develop this belief and make it a governing influence upon the mental customs of men. But, once established, it became omnipotent, as each insane notion necessarily becomes when it takes possession of man's brain. Take a madman, whatever the object of his madness--you will find that obscure and fixed idea which obsesses him seems to him the most natural thing in the world, and that, on the contrary, the real things which contradict this idea seem to him ridiculous and odious follies. Well, religion is a collective insanity, the more powerful because it is traditional folly, and because its origin is lost in the most remote antiquity. As collective insanity it has penetrated to the very depths of the public and private existence of the peoples; it is incarnate in society; it has become, so to speak, the collective soul and thought. Every man is enveloped in it from his birth; he sucks it in with his mother's milk, absorbs it with all that he touches, all that he sees. He is so exclusively fed upon it, so poisoned and penetrated by it in all his being, that later, however powerful his natural mind, he has to make unheard-of efforts to deliver himself from it, and even then never completely succeeds. We have one proof of this in our modern idealists, and another in our _doctrinaire_ materialists--the German Communists. They have found no way to shake off the religion of the State. The supernatural world, the divine world, once well established in the imagination of the peoples, the development of the various religious systems has followed its natural and logical course, conforming, moreover, in all things to the contemporary development of economical and political relations of which it has been in all ages, in the world of religious fancy, the faithful reproduction and divine consecration. Thus has the collective and historical insanity which calls itself religion been developed since fetichism, passing through all the stages from polytheism to Christian monotheism.