When this conjurer's trick has been performed, the same theories are transferred back again from organic nature into history and it is now claimed that their validity as eternal laws of human society has been proved

I created a pattern based on the tropical scene on the Bank of England’s 10 pound note; this pattern was then used to create a “camouflage” suit which I wore in the Tijuca Forest in Brazil. This is where Darwin spent a significant time developing his theories in which he applied ideas from political economy—he was reading not just Malthus, but Adam Smith—to nature. The site specific actions included looking at water marks of animals in Brazilian currency, photographing, and reading passages from Adam Smith. The quote “When this conjurer’s trick has been performed, the same theories are transferred back again from organic nature into history and it is now claimed that their validity as eternal laws of human society has been proved” is from one of Engels’s letters.