The art of those who govern consists above all in the science of employing words.

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.

A crowd is not merely impulsive and mobile. Like a savage, it is not prepared to admit that anything can come between its desire and the realisation of its desire.

Crowds are influenced mainly by images produced by the judicious employment of words and formulas

In crowds it is stupidity and not mother wit that is accumulated.

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

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.