late Gothic Florentine painter who perpetuated the traditions of Giotto, which he received from his teacher Agnolo Gaddi. He is best known for writing Il libro dell'arte (1437; The Craftsman's Handbook), the most informative source on the methods, techniques, and attitudes of medieval artists. Painting, according to Cennini, holds a high place among human occupations because it combines theory or imagination with the skill of the hand. In Il libro dell'arte, Cennini gave the first known explanation of the technique of painting with egg tempera.