If you despise painting, which is the only imitator of the visible works of nature, you will certainly despise a subtle invention which with philosophy and subtle speculation apprehends the qualities of forms, backgrounds, places, plants, animals, herbs and flowers, which are surrounded by light and shade. And truly this is knowledge and the legitimate offspring of nature, because painting is begotten by nature. But to be correct, we will say that it is the grandchild of nature, because all visible things are begotten by nature, and these her children have begotten painting. Therefore we shall rightly say that painting is the grandchild of nature and related to God. 33. Were a master to boast that he could remember all the forms and effects of nature, he would certainly appear to me to be graced with great ignorance, inasmuch as these effects are infinite and our memory is not sufficiently capacious to retain them. Therefore, O painter, beware lest in thee the lust of gain should overcome the honour of thy art, for the acquisition of honour is a much {93} greater thing than the glory of wealth. Thus, for this and for other reasons which could be given, first strive in drawing to express to the eye in a manifest shape the idea and the fancy originally devised by thy imagination; then go on adding or removing until thou art satisfied; then arrange men as models, clothed or nude, according to the intention of thy work, and see that, as regards dimension and size, in accordance with perspective there is no portion of the work which is not in harmony with reason and natural effects, and this will be the way to win honour in thy art. [Sidenote: Painting & Sculpture] 34. I have myself practised the art of sculpture as well as that of painting, and I have practised both arts in the same degree. I think, therefore, that I can give an impartial opinion as to which of the two is the most difficult: the most perfect requires the greater talent, and is to be preferred.