ABSTRACT
But since architecture above all the other sciences is the one the painter must have most complete knowledge of, and since it presents the greatest diversity that comes to the fore as soon as it is put into practice, as the painters, sculptors, goldsmiths and all the others who use it in their work know all too well, it is necessary to know its true rule in order to exercise it. This rule, in short, can be extracted better than anywhere else from the study of the form of good antique buildings that are, among so many others, the Coliseum and the Pantheon of Rome; and also many modern buildings too, a pure and true architecture, without all that confusing foliage and frames that suffocate all the beauty of the art. This beauty appears when the architect proceeds according to the rules of the precepts of the art that vary and are distinguished according to the different orders of architecture, the Tuscan, the Doric, the Ionic, the Corinthian, the Composite.
