Abstract EN:

The eighteenth century longed to do things on a grand scale for the mankind. Among these ideas, the spring of toleration. But the holy roman empire only agreed three religions and the french kingdom one. Every sect is therefore banished. Nevertheless it is from an established fact of ecclesiastical stagnation that a movement called pietism is going to rise in alsace. Who are these pietists dismissed at one and the same time by political and religious institutions ? what strength does induce them to from " conventicules " and missions that existed until the twentieth century? this research leads to analyse this movement : its flowering and its persecutions.