“Clive convinced himself that it wouldn’t be long before we’d be able to predict all their [the moths] equations of cause and effect, then perhaps even map out each and every cell, and configure them in their entirety as robots, in terms of molecules, chemicals and electrical signals. And what fed this particular obsession was Pupal Soup.

If you cut through a cocoon in mid-winter, a thick creamy liquid will spill out and nothing more. What goes into that cocoon in autumn is a caterpillar and what comes out in spring is entirely different—a moth, complete with papery wings, hair like legs and antennae. Yet this same creature spends winter as a gray-green liquid, a primordial soup. The miraculous meltdown of an animal into a case of fluid chemicals and its exquisite re-generation into a different animal, like a stupendous jigsaw, was a feat that, far from putting off, fed Clive’s obsession. He believed it made his lifetime ambition easier because, however complex it might be, it was, after all, only a jigsaw, and to Clive, that meant it was possible. For all the chemicals required to make a moth were right there in front of his eyes, in the pupal soup.”