of Wisdom was even more popular: over four hundred manuscripts in Latin, and over two hundred manuscripts in various medieval translations (it was translated into eight languages, including Dutch, French, Italian, Swedish, Czech, and English). Many early printings survive as well. The Clock was therefore second only to the Imitation of Christ in popularity among spiritual writings of the later Middle Ages. Among his many readers and admirers were Thomas à Kempis and John Fisher. Wolfgang Wackernagel and others have called Suso a "Minnesinger in prose and in the spiritual order" or a "Minnesinger of the Love of God" both for his use of images and themes from secular, courtly, romantic poetry and for his rich musical vocabulary. The mutual love of God and man which is his principal theme gives warmth and color to his style. He used the full and flexible Alemannic idiom with rare skill, and contributed much to the formation of good German prose, especially by giving new shades of meaning to words employed to describe inner sensations. Legacy and veneration In the world Suso was esteemed as a preacher, and was heard in the cities and towns of Swabia, Switzerland, Alsace, and the Netherlands. His apostolate, however, was not with the masses, but rather with individuals of all classes who were drawn to him by his singularly attractive personality, and to whom he became a personal director in the spiritual life. Suso was reported to have established among the Friends of God a society which he called the Brotherhood of the Eternal Wisdom. The so-called Rule of the Brotherhood of the Eternal Wisdom is but a free translation of a chapter of his Horologium Sapientiae and did not make its appearance until the fifteenth century. Suso was beatified in 1831 by Pope Gregory XVI, who assigned 2 March as his feast day, celebrated within the Dominican Order. The Dominicans now celebrate his feast on 23 January, the feria, or "free" day, nearest the day of his death. The words of the Christmas song "In dulci jubilo" are attributed to Suso. Editions and translations The Exemplar (Middle High German):''' Henry Suso, Das Buch von dem Diener (The Life of the Servant), ed. K. Bihlmeyer, Heinrich Seuse. Deutsche Schriften, 1907 (translated by Frank Tobin, in The Exemplar, with Two German Sermons, New York: Paulist Press, 1989, pp. 61–204) Das Büchlein der ewigen Weisheit (The Little Book of