But although there are close analogies between the genesis of a religious revolution, such as the Reformation, and that of a great political revolution like our own, their remote consequences are very different, which explains the difference of duration which they display. In religious revolutions no experience can reveal to the faithful that they are deceived, since they would have to go to heaven to make the discovery. In political revolutions experience quickly demonstrates the error of a false doctrine and forces men to abandon it. Thus at the end of the Directory the application of Jacobin beliefs had led France to such a degree of ruin, poverty, and despair that the wildest Jacobins themselves had to renounce their system. Nothing survived of their theories except a few principles which cannot be verified by experience, such as the universal happiness which equality should bestow upon humanity. 2. The beginnings of the Reformation and its first disciples. The Reformation was finally to exercise a profound influence upon the sentiments and moral ideas of a great proportion of mankind. Modest in its beginnings, it was at first a simple struggle against the abuses of the clergy, and, from a practical point of view, a return to the prescriptions of the Gospel. It never constituted, as has been claimed, an aspiration towards freedom of thought. Calvin was as intolerant as Robespierre, and all the theorists of the age considered that the religion of subjects must be that of the prince who governed them. Indeed in every country where the Reformation was established the sovereign replaced the Pope of Rome, with the same rights and the same powers. In France, in default of publicity and means of communication, the new faith spread slowly enough at first. It was about 1520 that Luther recruited a few adepts, and only towards 1535 was the new belief sufficiently widespread for men to consider it necessary to burn its disciples. In conformity with a well-known psychological law, these executions merely favoured the propagation of the Reformation. Its first followers included priests and magistrates, but were principally obscure artisans. Their conversion was effected almost exclusively by mental contagion and suggestion. As soon as a new belief extends itself, we see grouped round it many persons who are indifferent to the belief, but who find in it a pretext or opportunity for gratifying their passions or their greed. This phenomenon was observed at the time of the Reformation in many countries, notably in Germany and in England.