Crowds are somewhat like the sphinx of ancient fable: It is necessary to arrive at a solution of the problems offered by their psychology or to resign ourselves to being devoured by them.
Gustave Le BonThe 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.
Gustave Le Bon