You have a lot of nerve! Within your brain, spine, your body, networks of fibers transmit impulses, motion and feeling. Sometimes, too, you hit a raw nerve, suffer an attack of nerves or lose your nerve. Nerves are networks for information, physical, digital and social. Nerves are the veins in a leaf or an insect’s wing. Nerves represent guts and bravado; you need them to take the plunge or to offend with impudence.