Certain historical events--and they are precisely the most important--I again repeat, are not to be understood unless one has attained to an appreciation of the religious form which the convictions of crowds always assume in the long run. There are social phenomena that need to be studied far more from the point of view of the psychologist than from that of the naturalist. The great historian Taine has only studied the Revolution as a naturalist, and on this account the real genesis of events has often escaped him. He has perfectly observed the facts, but from want of having studied the psychology of crowds he has not always been able to trace their causes. The facts having appalled him by their bloodthirsty, anarchic, and ferocious side, he has scarcely seen in the heroes of the great drama anything more than a horde of epileptic savages abandoning themselves without restraint to their instincts. The violence of the Revolution, its massacres, its need of propaganda, its declarations of war upon all things, are only to be properly explained by reflecting that the Revolution was merely the establishment of a new religious belief in the mind of the masses. The Reformation, the massacre of Saint Bartholomew, the French religious wars, the Inquisition, the Reign of Terror are phenomena of an identical kind, brought about by crowds animated by those religious sentiments which necessarily lead those imbued with them to pitilessly extirpate by fire and sword whoever is opposed to the establishment of the new faith. The methods of the Inquisition are those of all whose convictions are genuine and sturdy. Their convictions would not deserve these epithets did they resort to other methods. Upheavals analogous to those I have just cited are only possible when it is the soul of the masses that brings them about. The most absolute despots could not cause them. When historians tell us that the massacre of Saint Bartholomew was the work of a king, they show themselves as ignorant of the psychology of crowds as of that of sovereigns. Manifestations of this order can only proceed from the soul of crowds. The most absolute power of the most despotic monarch can scarcely do more than hasten or retard the moment of their apparition. The massacre of Saint Bartholomew or the religious wars were no more the work of kings than the Reign of Terror was the work of Robespierre, Danton, or Saint Just. At the bottom of such events is always to be found the working of the soul of the masses, and never the power of potentates. BOOK II THE OPINIONS AND BELIEFS OF CROWDS CHAPTER I REMOTE FACTORS OF THE OPINIONS AND BELIEFS OF CROWDS