Thomas a Kempis, The Imitation of Christ.
The Imitation of Christ is a devotional book. The Imitation of Christ is perhaps the most widely read Christian devotional work next to the Bible. It is regarded as a religious classic. Its popularity was immediate and stunning as soon as it was published in the fifteenth century. It was edited 745 times from 1650 onwards. Apart from the Bible, no book had been translated into more languages than The Imitation of Christ. The text is divided into four books, which provide detailed spiritual instructions: “Helpful Counsels of the Spiritual Life”, “Directives for the Interior Life”, “On Interior Consolation” and “On the Blessed Sacrament”. The approach used in the Imitation is characterized by its emphasis on the interior life and withdrawal from the world, as opposed to an active imitation of Christ by other friars.