We see, then, that the disappearance of the conscious personality, the predominance of the unconscious personality, the turning by means of suggestion and contagion of feelings and ideas in an identical direction, the tendency to immediately transform the suggested ideas into acts; these, we see, are the principal characteristics of the individual forming part of a crowd. He is no longer himself, but has become an automaton who has ceased to be guided by his will.

The real cause of the great upheavals which precede changes of civilisations, such as the fall of the Roman Empire and the rise of the Arabian Empire, is a profound modification in the ideas of the peoples .... The memorable events of history are the visible effects of the invisible changes of human thought .... The present epoch is one of these critical moments in which the thought of mankind is undergoing a process of transformation.

At the bidding of a Peter the Hermit millions of men hurled themselves against the East; the words of an hallucinated enthusiast such as Mahomet created a force capable of triumphing over the Graeco-Roman world; an obscure monk like Luther bathed Europe in blood. The voice of a Galileo or a Newton will never have the least echo among the masses. The inventors of genius hasten the march of civilization. The fanatics and the hallucinated create history.

The beginning of a revolution is in reality the end of a belief.

A crowd thinks in images, and the image itself calls up a series of other images, having no logical connection with the first...A crowd scarcely distinguishes between the subjective and the objective. It accepts as real the images invoked in its mind, though they most often have only a very distant relation with the observed facts....Crowds being only capable of thinking in images are only to be impressed by images.

The role of the scholar is to destroy chimeras, that of the statesman is to make use of them.

Science has promised us truth...It has never promised us either peace or happiness.