This phenomenon is not peculiar to crowds. It is to be observed in many isolated individuals, not only among primitive beings, but in the case of all those--the fervent sectaries of a religious faith, for instance--who by one side or another of their intelligence are akin to primitive beings. I have observed its presence to a curious extent in the case of educated Hindoos brought up at our European universities and having taken their degree. A number of Western ideas had been superposed on their unchangeable and fundamental hereditary or social ideas. According to the chances of the moment, the one or the other set of ideas showed themselves each with their special accompaniment of acts or utterances, the same individual presenting in this way the most flagrant contradictions. These contradictions are more apparent than real, for it is only hereditary ideas that have sufficient influence over the isolated individual to become motives of conduct. It is only when, as the result of the intermingling of different races, a man is placed between different hereditary tendencies that his acts from one moment to another may be really entirely contradictory. It would be useless to insist here on these phenomena, although their psychological importance is capital. I am of opinion that at least ten years of travel and observation would be necessary to arrive at a comprehension of them. Ideas being only accessible to crowds after having assumed a very simple shape must often undergo the most thoroughgoing transformations to become popular. It is especially when we are dealing with somewhat lofty philosophic or scientific ideas that we see how far-reaching are the modifications they require in order to lower them to the level of the intelligence of crowds. These modifications are dependent on the nature of the crowds, or of the race to which the crowds belong, but their tendency is always belittling and in the direction of simplification. This explains the fact that, from the social point of view, there is in reality scarcely any such thing as a hierarchy of ideas--that is to say, as ideas of greater or less elevation. However great or true an idea may have been to begin with, it is deprived of almost all that which constituted its elevation and its greatness by the mere fact that it has come within the intellectual range of crowds and exerts an influence upon them. Moreover, from the social point of view the hierarchical value of an idea, its intrinsic worth, is without importance. The necessary point to consider is the effects it produces. The Christian ideas of the Middle Ages, the democratic ideas of the last century, or the social ideas of to-day are assuredly not very elevated. Philosophically considered, they can only be regarded as somewhat sorry errors, and yet their power has been and will be immense, and they will count for a long time to come among the most essential factors that determine the conduct of States.