[*†217.] But let not the work be too much enriched with gold or jewels; “for the abundance of them makes them look cheap; their value arising from the scarcity.” [Sidenote: XXV. The model.] [*†220.] It is very expedient to make a model of those things, which we have not in our sight, and whose {220.} nature is difficult to be retained in the memory. [Sidenote: XXVI. The scene of the picture.] [*†221.] We are to consider the places where we lay the scene of the picture; the countries where they were born, whom we represent; the manner of their actions, their laws, and customs, and all that is properly belonging to them. [Sidenote: XXVII. The graces and the nobleness.] [*†222.] Let a nobleness and grace be remarkable through all your work. But, to confess the truth, this is a most difficult undertaking; and a very rare present, which the artist receives rather from the hand of Heaven, than from his own industry and studies. [Sidenote: XXVIII. Let every thing be set in its proper place.] In all things you are to follow the order of nature; for which reason you must beware of drawing or painting clouds, winds, and thunder, towards the bottom of your piece, and hell, and waters, in the {225.} uppermost parts of it; you are not to place a stone column on a foundation of reeds, but let every thing be set in its proper place. [Sidenote: XXIX. Of the passions.] Besides all this, you are to express the motions {230.} of the spirits, and the affections or passions, whose centre is the heart; in a word, to make the soul visible, by the means of some few colours; [*†233.] this is that in which the greatest difficulty consists. Few there are, whom Jupiter regards with a favourable eye in this undertaking; so that it appertains only to those few, who participate somewhat of divinity itself, to work these mighty wonders. It is the business of rhetoricians, {235.} to treat the characters of the passions; and I shall content myself, with repeating what an excellent master has formerly said on this subject, that a “true and lively expression of the passions, is rather the work of genius, than of labour and study.” [Sidenote: XXX. Gothic ornaments are to be avoided.] [Sidenote: Colouring the third part of painting.]