This study describes the period of great changes in European history - the decline in the belief of magic and miracles and emerging of the new way of thinking which has brought the rise of religious persecution, the gradual secularization of politics and the rise of toleration and rationalism. Contents: Rationalism in Europe On the Declining Sense of the Miraculous Magic and Witchcraft On the Declining Sense of the Miraculous The Miracles of the Church Aesthetic, Scientific, and Moral Developments of Rationalism On Persecution The Antecedents of Persecution The Secularisation of Politics The Industrial History of Rationalism