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Dionysius ExiguusDionysius Exiguus (Dennis the Little or Dennis the Short, meaning humble) (c. 470 – c. 544) was a sixth century monk born in Scythia Minor, in what is now the territory of Romania, and a member of the so called "Scythian monks" community. Since about 500 he had lived in Rome, where, as a learned member of the Vatican's Curia, he translated from Greek into Latin 401 ecclesiastical canons, including the apostolical canons and the decrees of the councils of Nicaea, Constantinople, Chalcedon and Sardis, and also a collection of the decretals of the popes from Siricius to Anastasius II. These collections had great authority in the West and still guide church administrations. Dionysius also wrote a treatise on elementary mathematics. Bede elevated him to an abbot (a leader of monks). Anno DominiDionysius is best-known as the inventor of the Anno Domini era, which is used to number the years of both the Gregorian calendar and the Julian calendar. He used it to identify the several Easters in his Easter table, but did not use it to date any historical event. When he devised his table he stated was 525 years "since the incarnation [conception] of our Lord Jesus Christ". How he arrived at that number is unknown. He invented a new system of numbering years to replace the Diocletian years that had been used in an old Easter table because he did not wish to continue the memory of a tyrant who persecuted Christians. The Anno Domini era became dominant in Western Europe only after it was used by the Venerable Bede to date the events in his Ecclesiastical History of the English People. Easter tablesIn 525, Dionysius prepared a table of the future dates of Easter and a set of "arguments" explaining their calculation (computus) on his own initiative, not at the request of Pope John. Note well that only the first nine arguments are by Dionysius. He introduced his tables and arguments via a letter to a bishop Petronius (also written in 525) and added another explanatory letter (written in 526). He ignored the existing tables used by the Church of Rome complaining that they did not obey Alexandrian principles, without actually acknowledging their existence. To be sure that his own tables were correct, he simply extended a set of tables prepared in Alexandria that had circulated in the West in Latin, but were never used in the West to determine the date of Easter. No evidence exists that the Church of Rome accepted the Dionysian tables until the tenth century, although it is possible that they were accepted sometime during the sixth century. Most of the British Church accepted them after the Synod of Whitby in 664, although quite a few individual churches and monasteries refused to accept them, the last holdout finally accepting them during the early tenth century. The Church of the Franks (France) accepted them during the late ninth century under the tutelage of Alcuin, after he arrived from Britain. Ever since the second century, some bishoprics in the Eastern Roman Empire had counted years from the birth of Christ, but there was no agreement on the correct epoch. Because Dionysius did not place the Incarnation in an explicit year, competent scholars have deduced both AD 1 and 1 BC. Most have selected 1 BC (historians do not use a year zero). Because the anniversary of the Incarnation was 25 March, which was near Easter, a year that was 525 years "since the Incarnation" implied that 525 whole years were completed near that Easter. Consequently one year since the Incarnation would have meant 25 March 1, meaning that Dionysius placed the Incarnation on 25 March 1 BC. Because the birth of Jesus was nine calendar months later, Dionysius implied, but never stated, that Jesus was born 25 December 1 BC. Only one scholar, Georges Declerq, thinks that Dionysius placed the Incarnation and Nativity in AD 1, basing his conclusion on the structure of Dionysius's Easter tables. In either case, Dionysius ignored his predecessors, who usually placed the Nativity in the year we now label 2 BC. Kepler was the first to note that Christ was born during the reign of King Herod the Great, whose death he placed in 4 BC. Kepler chose this year because Josephus stated that a lunar eclipse occurred shortly before Herod's death. Although Dionysius stated that the First Council of Nicaea in 325 sanctioned his method of dating Easter, the surviving documents are ambiguous. A canon of the council implied that the Roman and Alexandrian methods were the same even though they were not, whereas a delegate from Alexandria stated in a letter to his brethren that their method was supported by the council. In either case, Dionysius' method had actually been used by the Church of Alexandria (but not by the Church of Rome) at least as early as 311, and probably began during the first decade of the fourth century, its dates naturally being given in the Alexandrian calendar. Thus Dionysius did not develop a new method of dating Easter. The most that he may have done was convert its arguments from the Alexandrian calendar into the Julian calendar. Because Dionysius's method of computing Easter used dates in the Julian calendar, it is also called the Julian Easter. This Easter is still used by almost all Orthodox churches. The Gregorian Easter still uses the same definition, but relative to its own solar and lunar dates.
Bede Bede(also Saint Bede, the Venerable Bede, or (from Latin) Beda [beda]), (c. 672 or 673 – May 25, 735), was a Benedictine monk at the Northumbrian monastery of Saint Peter at Monkwearmouth, today part of Sunderland. He is well known as an author and scholar, and his most famous work, The Ecclesiastical History of the English People gained him the title “The father of English history”. Almost all that is known of Bede’s life is contained in a notice added by himself when he was 59 to his Historia, which states that he was placed in the monastery at Wearmouth at the age of seven, that he became deacon in his nineteenth year, and priest in his thirtieth. He implies that he finished the Historia at the age of 59. It is not clear whether he was of noble birth. He was trained by the abbot Ceolfrid, and probably accompanied him to Wearmouth’s sister monastery of Jarrow. There he spent his life, prominent activities evidently being teaching and writing. There he also died, on 25 May 735, and was buried, although his body was later transferred to Durham Cathedral. His works show that he had at his command all the learning of his time. It was thought that the library at Wearmouth-Jarrow was between 300-500 books, making it one of the largest and most extensive in England. It is clear that Bishop made strenuous efforts to collect books during his extensive travels. Bede’s writings are classed as scientific, historical and theological, reflecting the range of his writings from music and metrics to Scripture commentaries. He was proficient in patristic literature, and quotes Virgil, Lucretius, Ovid, Horace and other classical writers, but with some disapproval. He knew some Greek, but no Hebrew. His Latin is generally clear and without affectation, and he was a skillful story-teller. However, his style can be considerably more obscure in his Biblical commentaries. Bede’s scriptural commentaries employed the allegorical method of interpretation and his history includes accounts of miracles, which to modern historians has seemed at odds with his critical approach to the materials in his history. Modern studies have shown the important role such concepts played in the world-view of Early Medieval scholars. The most important and best known of his works is the Historia ecclesiastica gentis Anglorum (The Ecclesiastical History of the English People), giving in five books and 400 pages the history of England, ecclesiastical and political, from the time of Caesar to the date of its completion (731). The first twenty-one chapters, are compiled from earlier writers such as Orosius, Gildas, Prosper of Aquitaine, the letters of Pope Gregory I and others, with the insertion of legends and traditions. After 596, documentary sources, which Bede took pains to obtain throughout England and from Rome, are used, as well as oral testimony, which he employed with critical consideration of its value. He cited his references and was very concerned about the sources of all of his sources, which created an important historical chain. Bede’s use of something similar to the anno Domini era, created by the monk Dionysius Exiguus, throughout Historia Ecclesiastica was very influential in causing that era to be adopted thereafter in Western Europe. Specifically, he used anno ab incarnatione Domini (in the year from the incarnation of the Lord) or anno incarnationis dominicae (in the year of the incarnation of the lord). He never abbreviated the term like the modern AD. Within this work, he was also the first writer to use a term similar to the English before Christ. Bede lists his works in an autobiographical note at the end of his Ecclesiastical History. He clearly considered his commentaries on many books of the Old and New Testaments as important; they come first on this list and dominate it in sheer number. These commentaries reflect the biblical focus of monastic life. "I spent all my life," he wrote, "in this monastery, applying myself entirely to the study of Scriptures." As Chapter 66 of his On the Reckoning of Time, in 725 Bede wrote the Greater Chronicle (chronica maiora), which sometimes circulated as a separate work. The dating of events in the Chronicle is inconsistent with his other works, using the era of creation, the anno mundi. Scientific writings.The noted historian of science, George Sarton, called the eighth century "The Age of Bede"; clearly Bede must be considered as an important scientific figure. He wrote several major works: a work On the Nature of Things; a work On Time, providing an introduction to the principles of Easter computus; and a longer work on the same subject; On the Reckoning of Time, which became the cornerstone of clerical scientific education during the ninth century. He also wrote several shorter letters and essays discussing specific aspects of computus and a treatise on grammar and on figures of speech for his pupils. On the Reckoning of Time included an introduction to the traditional ancient and medieval view of the cosmos, including an explanation of how the spherical earth influenced the changing length of daylight, of how the seasonal motion of the Sun and Moon influenced the changing appearance of the New Moon at evening twilight, and a quantitative relation between the changes of the Tides at a given place and the daily motion of the moon. Since the focus of his book was calculation, Bede gave instructions for computing the date of Easter and the related time of the Easter Full Moon, for calculating the motion of the Sun and Moon through the zodiac, and for many other calculations related to the calendar. He gives some information about the months of the Anglo-Saxon calendar. For calendar purposes, Bede made a new calculation of the age of the world since the Creation. Due to his innovations in computing the age of the world, he was accused of heresy at the table of Bishop Wilfred, his chronology being contrary to accepted calculations. His works were so influential that late in the ninth century Notker the Stammerer, a monk of the Monastery of St. Gall in Switzerland, wrote that "God, the orderer of natures, who raised the Sun from the East on the fourth day of Creation, in the sixth day of the world has made Bede rise from the West as a new Sun to illuminate the whole Earth". His scholarship and importance to Catholicism were recognized in 1899 when he was declared the only English Doctor of the Church as St Bede the Venerable. He is also the only Englishman in Dante's Paradise, mentioned among theologians and doctors of the church.
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