id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_7a6z7ddmirdpjjicsmrg7x7lx4	Deborah Parker	Leonardo da Vinci. Walter Isaacson. New York: Simon and Schuster, 2017. xx + 602 pp. $35	2019	3	.pdf	application/pdf	1476	93	59	that for Theophilus, art is the transformation of materials into useful objects, which Theophilus, Gearhart argues, and art making is a way to practice virtue. In chapter 4 Gearhart also addresses the question of Theophilus's relationship to Roger of Helmarshausen, one of the few known artists of his time. Furthermore, despite her neutrality toward the identification of Theophilus as Roger, most of the objects she discusses have been attributed painter's works of art, Isaacson examines Leonardo's life through the notebooks. Leonardo found between phenomena as disparate as hair curls and waves of water. In such instances the story often gives way to lists of phenomena, each section a testimony to Leonardo's restless mind, ingenuity, and relentless curiosity. These are some of the most engaging parts of the biography: the author deftly presents Leonardo's artistic virtuosity in the painter's own Isaacson's account of the rivalry between Leonardo and Michelangelo, one social and	./cache/work_7a6z7ddmirdpjjicsmrg7x7lx4.pdf	./txt/work_7a6z7ddmirdpjjicsmrg7x7lx4.txt