In this book, the eminent English art theorist John Ruskin (1819-1900) sets out the principles of drawing established by the great Florentine Giotto. These principles differ from the methods of classical schools, which were considered generally accepted and in which, according to the author, there are serious errors and shortcomings. The book contains a series of practical techniques and exercises, as well as aphorisms by J. Ruskin, a recognized master of this literary genre.