He spoke to men who could not read, for whom there were no printed pages, but whose heart received his teaching through the eye.

Thus painting was not then what it is now, a decoration of existence, but a potent and efficient agent in the education of the race.

Such opportunities do not occur twice in the same age.

Once in Greece for the pagan world; once in Italy for the modern world;--that must suffice for the education of the human race.
Like Niccola Pisano, Giotto not only founded a school in his native city, but spread his manner far and wide over Italy, so that the first period of the history of painting is the Giottesque.

The Gaddi of Florence, Giottino, Puccio Capanna, the Lorenzetti of Siena, Spinello of Arezzo, Andrea Orcagna, Domenico Veneziano, and the lesser artists of the Pisan Campo Santo, were either formed or influenced by him.