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Roger Bacon and the Origins of Perspectiva in the Middle Ages : A Critical Edition and English Translation of Bacon's Perspectiva With an Introduction

Roger Bacon and the Origins of Perspectiva in the Middle Ages : A Critical Edition and English Translation of Bacon's Perspectiva With an Introduction 
by David C. Lindberg, Roger Bacon.  

Roger Bacon  ca. 1214 - ca. 1292

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Roger Bacon's Letter : Concerning the Marvelous Power of Art and Nature and Concerning the Nullity of Magic Together With Notes

Rodger Bacon:  History of Alchemy

Edmund Brehm article explores the relationship of 13th century natural philosopher Bacon to alchemy and the Hermetic sciences.  


ALCHEMY, throughout its history, has shown a dual nature. On the one hand, it has involved the use of chemical substances and so is claimed by the history of science as the precursor of modern chemistry. Yet at the same time, alchemy has, throughout its history, also been associated with the esoteric, spiritual beliefs of Hermeticism and thus is a proper subject for the historian of religious thought...


Tract on the Tincture and Oil of Antimony

Roger Bacon wrote this tract in 1731 on the preparation of Stibium, which supposedly heals human illness and weakness.


On Experimental Science

From the Medieval Sourcebook.  


Having laid down the main points of the wisdom of the Latins as regards language, mathematics and optics, I wish now to review the principles of wisdom from the point of view of experimental science, because without experiment it is impossible to know anything thoroughly.


Roger Bacon:  Mathematics in the Service of Theology

Translation of the fourth section of Roger Bacon's 1268 work. The title of this work is "Mathematics in the Service of Theology."


Fryar Roger Called Bachon

Essay by Dianna L. Dodson.


Within the studious atmosphere of their library were gathered the brethren of the Oxford Franciscans. The friars watched as pages were torn from a leather-bound manuscript and nailed to the plans of the library shelves. When the last vellum sheet of the contraband work had been hung to yellow and fade, the friars left the room in silent procession. One or two of the younger novitiates had not known Brother Roger Bacon in his days of fiery verbal assault against mediaeval education and educators. Perhaps they paused to glance at his scrawled handwriting on the desiccated pages and wondered at the nature of his crime. He had died only that month, June 1292...


Roger Bacon:  Despair over 13th Century Learning

From Compendium Studii Philosophiae


Let us look upon all conditions in the world, and consider them diligently; everywhere we shall find boundless corruption, and first of all in the Head. For the Court of Rome, which once was ruled by God's wisdom, and should always be so ruled, is now debased by the constitutions of lay Emperors, made for the governance of lay-folk and contained in the code of civil law. The Holy See is torn by the deceit and fraud of unjust men. Justice perishes all peace is broken, infinite scandals are aroused. This bears its fruit in utterly perverse manners; pride reigns, covetousness burns, envy gnaws upon all, the whole [Papal] Court is defamed of lechery, and gluttony is lord of all. . .if this be so in the Head, what then is done among the members? Let us see the prelates; how they run after money, neglect the cure of souls, promote their nephews, and other carnal friends, and crafty lawyers who ruin all by their counsels; for they despise students in philosophy and theology, and hinder the two Orders, who come forward to serve the Lord without hire, from living in freedom and working for the salvation of souls. Let us consider the religious Orders: I exclude none from what I say...


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