it. It may be observed, that the more excellent any thing is, the more will be the counterfeits of it. Thus there are many more counterfeits of silver and gold, than of iron and copper: there are many false diamonds and rubies, but who goes about to counterfeit common stones? Though the more excellent things are, the more difficult it is to make any thing like them, in their essential nature and internal virtue; yet the more manifold will the counterfeits be, and the more will art and subtlety be exercised and displayed, in an exact imitation of the outward appearance.