海蒂·C·吉哈特在这篇研究十二世纪罕见的关于多元艺术的论文中，探索了中世纪晚期艺术家创作作品时所遵循的独特价值体系。
由一位化名为提奥菲卢斯的僧侣在德国北部撰写的《关于多样性艺术》是该时期仅存的完整艺术著作。它包含三本书，每本书都有丰富的宗教序言，描述绘画、玻璃和金属制品的艺术。Gearhart将这篇独一无二的论文与当时其他僧侣和文学思想家的作品放在一起，并对文本本身进行了新的解读。通过检查最早的手稿，她展示了一件精心安排、精巧的作品，将艺术的制作与精神生活的美德联系起来。Gearhart展示了一种独特的中世纪艺术理论，阐述了从思想和准备到材料获取、作品制作、形式创造和视觉实践的整个生产过程。
对艺术史上最重要的文本之一的一个重要的新视角，以及第一次以英语、提奥菲卢斯和中世纪艺术的理论与实践进行此类研究，为中世纪艺术制作的原则和价值提供了新的见解。艺术史、中世纪研究和基督教的学者会发现Gearhart的书特别有启发性和价值。
Theophilus and the Theory and Practice of Medieval Art
In this study of the rare twelfth-century treatise On Diverse Arts, Heidi C. Gearhart explores the unique system of values that guided artists of the High Middle Ages as they created their works.
Written in northern Germany by a monk known only by the pseudonym Theophilus, On Diverse Arts is the only known complete tract on art to survive from the period. It contains three books, each with a richly religious prologue, describing the arts of painting, glass, and metalwork. Gearhart places this one-of-a-kind treatise in context alongside works by other monastic and literary thinkers of the time and presents a new reading of the text itself. Examining the earliest manuscripts, she reveals a carefully ordered, sophisticated work that aligns the making of art with the virtues of a spiritual life. On Diverse Arts, Gearhart shows, articulated a distinctly medieval theory of art that accounted for the entire process of production―from thought and preparation to the acquisition of material, the execution of work, the creation of form, and the practice of seeing.
An important new perspective on one of the most significant texts in art history and the first study of its kind available in English, Theophilus and the Theory and Practice of Medieval Art provides fresh insight into the principles and values of medieval art making. Scholars of art history, medieval studies, and Christianity will find Gearhart’s book especially edifying and valuable.
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