We have shown that crowds do not reason, that they accept or reject ideas as a whole, that they tolerate neither discussion nor contradiction, and that the suggestions brought to bear on them invade the entire field of their understanding and tend at once to transform themselves into acts. We have shown that crowds suitably influenced are ready to sacrifice themselves for the ideal with which they have been inspired. We have also seen that they only entertain violent and extreme sentiments, that in their case sympathy quickly becomes adoration, and antipathy almost as soon as it is aroused is transformed into hatred. These general indications furnish us already with a presentiment of the nature of the convictions of crowds. When these convictions are closely examined, whether at epochs marked by fervent religious faith, or by great political upheavals such as those of the last century, it is apparent that they always assume a peculiar form which I cannot better define than by giving it the name of a religious sentiment. This sentiment has very simple characteristics, such as worship of a being supposed superior, fear of the power with which the being is credited, blind submission to its commands, inability to discuss its dogmas, the desire to spread them, and a tendency to consider as enemies all by whom they are not accepted. Whether such a sentiment apply to an invisible God, to a wooden or stone idol, to a hero or to a political conception, provided that it presents the preceding characteristics, its essence always remains religious. The supernatural and the miraculous are found to be present to the same extent. Crowds unconsciously accord a mysterious power to the political formula or the victorious leader that for the moment arouses their enthusiasm. A person is not religious solely when he worships a divinity, but when he puts all the resources of his mind, the complete submission of his will, and the whole-souled ardour of fanaticism at the service of a cause or an individual who becomes the goal and guide of his thoughts and actions. Intolerance and fanaticism are the necessary accompaniments of the religious sentiment. They are inevitably displayed by those who believe themselves in the possession of the secret of earthly or eternal happiness. These two characteristics are to be found in all men grouped together when they are inspired by a conviction of any kind. The Jacobins of the Reign of Terror were at bottom as religious as the Catholics of the Inquisition, and their cruel ardour proceeded from the same source.