Beside these passing and intermittent states, there are other more durable ones, where this strengthening influence of society makes itself felt with greater consequences and frequently even with greater brilliancy. There are periods in history when, under the influence of some great collective shock, social interactions have become much more frequent and active. Men look for each other and assemble together more than ever. That general effervescence results which is characteristic of revolutionary or creative epochs. Now this greater activity results in a general stimulation of individual forces. Men see more and differently now than in normal times. Changes are not merely of shades and degrees; men become different. The passions moving them are of such an intensity that they cannot be satisfied except by violent and unrestrained actions, actions of superhuman heroism or of bloody barbarism. This is what explains the Crusades,[684] for example, or many of the scenes, either sublime or savage, of the French Revolution.[685] Under the influence of the general exaltation, we see the most mediocre and inoffensive bourgeois become either a hero or a butcher.[686] And so clearly are all these mental processes the ones that are also at the root of religion that the individuals themselves have often pictured the pressure before which they thus gave way in a distinctly religious form. The Crusaders believed that they felt God present in the midst of them, enjoining them to go to the conquest of the Holy Land; Joan of Arc believed that she obeyed celestial voices.[687]