John of Ruusbroec) reached out to wider audiences; an eighth edition was published in 1885. In 1864, he proposed a calendar reform for Russia: After dropping 12 days to align with Gregorian calendar dates before the year 1900, the leap year in 1900 along with every 128th year afterwards (2028, 2156, etc.) under the Julian rules would be cancelled. This would give a mean year of 365 days, 5 hours, 48 minutes, 45 seconds, which is extremely close to the mean tropical year. Neither the Tsar nor Orthodox clergy accepted this unsolicited proposal, though a modified version of it was made by Sergey 	Johann Heinrich von Mädler
7599916	Glazenap in 1900, and ultimately Russia would adopt the Gregorian calendar in 1918. The craters Mädler on the Moon and Mädler on Mars are both named in his honor. Johann Heinrich von Mädler Johann Heinrich von Mädler (29 May 1794, Berlin – 14 March 1874, Hannover) was a German astronomer. Life and work. His father was a master tailor and when 12 he studied at the Friedrich‐Werdersche Gymnasium in Berlin. He was orphaned at age 19 by an outbreak of typhus, and found himself responsible for raising three younger sisters. He began giving academic lessons as a private tutor and in 	Johann Heinrich von Mädler
7599917	John of Ruusbroec John of Ruusbroec John van Ruysbroeck, original Flemish name Jan van Ruusbroec () (1293 or 1294 – 2 December 1381) was an Augustinian canon and one of the most important of the Flemish mystics. Some of his main literary works include The Kingdom of the Divine Lovers, The Twelve Beguines, The Spiritual Espousals, A Mirror of Eternal Blessedness, The Little Book of Enlightenment", and "The Sparkling Stone". Some of his letters also survive, as well as several short sayings (recorded by some of his disciples, such as Jan van Leeuwen). He wrote in the Dutch vernacular, the language of the common people  of the Low Countries, rather than in Latin, the language of the Catholic Church liturgy and official texts, in order to reach a wider audience. Life. Until his ordination. John had a devout mother, who brought him up in the Catholic faith; of his father we know nothing. John's surname, "Van Ruusbroec", is not a surname in the modern sense but a toponym that refers to his native hamlet - modern-day Ruisbroek near Brussels. At the age of eleven he left his mother, departing without leave or warning, to place himself under the guidance and tuition of his uncle , Jan Hinckaert, a canon regular of St. Gudule's, Brussels. Hinckaert was living according to his Apostolic views with a fellow-canon, Frank van Coudenberg. This uncle provided for Ruysbroeck's education with a view to the priesthood. In due course, Ruysbroeck was presented with a prebend in St. Gudule's church, and ordained in 1318. His mother had followed him to Brussels, entered a Béguinage there, and died shortly before his ordination. Priest in Brussels. From 1318 until 1343 Ruysbroeck served as a parish priest at St. Gudula. He continued to lead, together with his uncle Hinckaert and Van  Coudenberg, a life of extreme austerity and retirement. At that time the Brethren of the Free Spirit were causing controversy in the Netherlands and one of them, a woman named Heilwige Bloemardinne, was particularly active in Brussels, propagating her beliefs chiefly by means of popular pamphlets. Ruysbroeck responded with pamphlets also written in the native tongue (Middle Dutch). Nothing of these treatises remains. The controversy had a permanent effect on Ruysbroeck: his later writings bear constant reference, direct and indirect, to the heretical views expressed in these times, and he always wrote in the country's native language, chiefly with  a view to counteracting these writings which he viewed as heretical. Priest in Groenendaal. The desire for a more retired life, and possibly also the persecution which followed Ruysbroeck's attack on Bloemardinne, induced Ruysbroeck, Jan Hinckaert (d. 1350) and Vrank van Coudenberg (d. 1386) to leave Brussels in 1343 for the hermitage of Groenendaal, in the neighbouring Sonian Forest, which was made over to them by John III, Duke of Brabant. The ruins of the monastery are still present in the forest of Soignes. But here so many disciples joined the little company that it was found expedient to  organize into a duly-authorized religious body. The hermitage was erected into a community of canons regular on 13 March 1349, and eventually it became the motherhouse of a congregation, which bore its name of Groenendaal. Francis van Coudenberg was appointed first provost, and John Ruysbroeck prior. Hinckaert refrained from making the canonical profession lest the discipline of the house should suffer from the exemptions required by the infirmities of his old age; he dwelt, therefore, in a cell outside the cloister and there a few years later died. This period, from his religious profession (1349) to his death (1381 ), was the most active and fruitful of Ruysbroeck's career. During this time, his fame as a man of God, as a sublime contemplative and a skilled director of souls, spread beyond the bounds of Flanders and Brabant to Holland, Germany, and France. He had relations with the nearby Carthusian house at Herne, and also with several communities of Poor Clare Franciscans. We know that he had connections with the Friends of God in Strasbourg, and also that in about 1378 he was visited by Geert Groote, the founder of the Devotio Moderna. It is possible, though disputed, that John  Tauler came to see him. John died at Groenendaal, aged 82, on 2 December 1381. Works. In total, Ruysbroeck wrote twelve books, seven epistles, two hymns and a prayer. All were written in Middle Dutch. Around 1340, Ruysbroeck wrote his masterpiece, "The Spiritual Espousals". The 36 surviving Dutch manuscripts, as well as translations into Latin and Middle High German, are evidence of the book's popularity. Some of the text was also translated into Middle English (via the Latin translation) as "The Chastising of God's Children" (which was later printed by Wynkyn de Worde). Around the same time, he  also wrote a short treatise, "The Sparkling Stone", which was also translated into Middle English. Ruysbroeck's most famous writings were composed during his time in Groenendaal. His longest and most popular work (surviving today in 42 manuscripts), "The Spiritual Tabernacle" was begun in Brussels but finished at Groenendaal, presumably early on in his time there. Two brief works, "The Christian Faith" (an explanation of the Creed) and a treatise on "The Four Temptations", also date from around the time of Ruysbroeck's arrival in Groenendaal. His later works include four writings to Margareta van Meerbeke, a Franciscan nun of  Brussels. These are "The Seven Enclosures" (c1346-50), the first of his seven surviving letters, "The Seven Rungs" (c1359-60), and "A Mirror of Eternal Blessedness". Around 1363 the Carthusians at Herne dispatched a deputation to Groenendaal presenting Ruysbroeck with questions on his first book, "The Realm of Lovers". Ruysbroeck went to Herne to clarify his teaching, and afterwards put this in writing in his work "The Little Book of Enlightenment". Thought. The treatise "The Seven Steps of the Ladder of Spiritual Love" is the one that is currently most-readily available. Of the various treatises preserved, the best-known  and the most characteristic is that entitled "The Spiritual Espousals". It is divided into three books, treating respectively of the active, the interior, and the contemplative life. Literally, Ruysbroeck wrote as the spirit moved him. He loved to wander and meditate in the solitude of the forest adjoining the cloister; he was accustomed to carry a tablet with him, and on this to jot down his thoughts as he felt inspired so to do. Late in life he was able to declare that he had never committed aught to writing save by the motion of the Holy Ghost. In none  of his treatises do we find anything like a complete or detailed account of his system; perhaps it would be correct to say that he himself was not conscious of elaborating any system. In his dogmatic writings he explains, illustrates, and enforces traditional teachings with remarkable force and lucidity. In his ascetic works, his favourite virtues are detachment, humility and charity; he loves to dwell on such themes as flight from the world, meditation upon the life of Christ, especially the passion, abandonment to the Divine Will, and an intense personal love of God. In common with most of the  German mystics, Ruysbroeck starts from divine matters before describing humanity. His work often then returns to discussing God, showing how the divine and the human are so closely united as to become one. He demonstrates inclinations towards Christian universalism in writing that "Man, having proceeded from God is destined to return, and become one with Him again." But here he is careful to clarify his position: "There where I assert that we are one in God, I must be understood in this sense that we are one in love, not in essence and nature." Despite this declaration, however, and other  similar saving clauses scattered over his pages, some of Ruysbroeck's expressions are certainly rather unusual and startling. The sublimity of his subject-matter was such that it could scarcely be otherwise. His devoted friend, Geert Groote, a trained theologian, confessed to a feeling of uneasiness over certain of his phrases and passages, and begged him to change or modify them for the sake at least of the weak. Later on, Jean Gerson and then Bossuet both professed to find traces of unconscious pantheism in his works. But as an offset we may mention the enthusiastic commendations of his contemporaries , Groote, Johannes Tauler, Thomas à Kempis, John of Schoonhoven, and in subsequent times of the Franciscan Henry van Herp, the Carthusians Denis and Laurentius Surius, the Carmelite Thomas á Jesu, the Benedictine Louis de Blois, and the Jesuit Leonardus Lessius. Ernest Hello and especially Maurice Maeterlinck have done much to make his writings known. Ruysbroeck was a powerful influence in developing United Nations Secretary General Dag Hammarskjöld's conception of spiritual growth through selfless service to humanity, as expressed in his book of contemplations called "Vägmärken" ('Markings'). Ruysbroeck insisted that the soul finds God in its own depths, and noted  three stages of progress in what he called the spiritual ladder of Christian attainment: (1) the active life, (2) the inward life, (3) the contemplative life. He did not teach the fusion of the self in God, but held that at the summit of the ascent the soul still preserves its identity. In the "Kingdom of the Lovers of God" he explains that those seeking wisdom must "flow forth on the waters to all the boundaries of the earth, that is, on compassion, pity and mercy shown to the needs of all men", must "fly in the air of the  Rational faculty" and "refer all actions and virtues to the honour of God"; thence (through grace) they will find an "immense and boundless clearness" bestowed upon their mind. In relation to the contemplative life, he held that three attributes should be acquired: The first is spiritual freedom from worldly desires ("as empty of every outward work as if he did not work at all"), the second is a mind unencumbered with images ("inward silence"), and the third is a feeling of inward union with God ("even as a burning and glowing fire which can never more be quenched"). His works , of which the most important were "De vera contemplatione" ("On true contemplation") and "De septem gradibus amoris" ("On the seven steps of love"), were published in 1848 at Hanover; also "Reflections from the Mirror of a Mystic" (1906) and "Die Zierde der geistlichen Hochzeit" (1901). Veneration and commemoration. After Ruysbroeck's death in 1381, his relics were carefully preserved and his memory honoured as that of a saint. After his death, stories called him the "Ecstatic Doctor" or "Divine Doctor", and his views formed a link between the Friends of God and the Brethren of the Common Life, the ideas  which may have helped to bring about the Reformation. When Groenendaal Priory was suppressed by Joseph II in 1783, his relics were transferred to St. Gudule's, Brussels, where, however, they were lost during the French Revolution. Ruysbroeck was beatified on 1 December 1908, by Pope Pius X. No authentic portrait of Ruysbroeck is known to exist; but the traditional picture represents him in the canonical habit, seated in the forest with his writing tablet on his knee, as he was in fact found one day by the brethren—rapt in ecstasy and enveloped in flames, which encircle without consuming  the tree under which he is resting. At the University of Antwerp there is a Ruusbroec Institute for the study of the history of spirituality. There is also a secondary school called Jan van Ruusbroeckollege in Laken near the Royal Palace of Belgium. Cultural references. The epigraph of the 1884 novel "À rebours" by Joris-Karl Huysmans has the following Ruysbroeck quotation: "I must rejoice beyond the bounds of time... though the world may shudder at my joy, and in its coarseness know not what I mean." In this novel, Huysmans describes Ruysbroeck as ""un mystique du siècle, dont  la prose offrait un incompréhensible mais attirant amalgame d’exaltations ténébreuses, d’effusions caressantes, de transports âpres"" ("a thirteenth century mystic whose prose presented an incomprehensible but attractive amalgam of gloomy ectasies, tender raptures, and violent rages.") Ruysbroeck is mentioned in "The Razor's Edge", a novel by W. Somerset Maugham. Further reading. Modern editions. Older translations: John of Ruusbroec John van Ruysbroeck, original Flemish name Jan van Ruusbroec () (1293 or 1294 – 2 December 1381) was an Augustinian canon and one of the most important of the Flemish mystics. Some of his main literary works include "The Kingdom of the Divine Lovers