There are other motives that dictate to him a like reserve. The complexity of social facts is such, that it is impossible to grasp them as a whole and to foresee the effects of their reciprocal influence. It seems, too, that behind the visible facts are hidden at times thousands of invisible causes. Visible social phenomena appear to be the result of an immense, unconscious working, that as a rule is beyond the reach of our analysis. Perceptible phenomena may be compared to the waves, which are the expression on the surface of the ocean of deep-lying disturbances of which we know nothing. So far as the majority of their acts are considered, crowds display a singularly inferior mentality; yet there are other acts in which they appear to be guided by those mysterious forces which the ancients denominated destiny, nature, or providence, which we call the voices of the dead, and whose power it is impossible to overlook, although we ignore their essence. It would seem, at times, as if there were latent forces in the inner being of nations which serve to guide them. What, for instance, can be more complicated, more logical, more marvellous than a language? Yet whence can this admirably organised production have arisen, except it be the outcome of the unconscious genius of crowds? The most learned academics, the most esteemed grammarians can do no more than note down the laws that govern languages; they would be utterly incapable of creating them. Even with respect to the ideas of great men are we certain that they are exclusively the offspring of their brains? No doubt such ideas are always created by solitary minds, but is it not the genius of crowds that has furnished the thousands of grains of dust forming the soil in which they have sprung up? Crowds, doubtless, are always unconscious, but this very unconsciousness is perhaps one of the secrets of their strength. In the natural world beings exclusively governed by instinct accomplish acts whose marvellous complexity astounds us. Reason is an attribute of humanity of too recent date and still too imperfect to reveal to us the laws of the unconscious, and still more to take its place. The part played by the unconscious in all our acts is immense, and that played by reason very small. The unconscious acts like a force still unknown. If we wish, then, to remain within the narrow but safe limits within which science can attain to knowledge, and not to wander in the domain of vague conjecture and vain hypothesis, all we must do is simply to take note of such phenomena as are accessible to us, and confine ourselves to their consideration. Every conclusion drawn from our observation is, as a rule, premature, for behind the phenomena which we see clearly are other phenomena that we see indistinctly, and perhaps behind these latter, yet others which we do not see at all. CONTENTS INTRODUCTION THE ERA OF CROWDS BOOK I THE MIND OF CROWDS