The most mysterious object in the universe is covered in a dull grey membrane and resembles a gigantic fungus. It is, of course, the human brain. Technology has helped us understand how the brain gives rise to the human mind. We can now tell which regions of the brain use energy and which cells generate electricity, as we fall in love, tell a lie or dream of a lottery win. In this accessible and entertaining book, Robert Winston explains how memories are formed or lost, how the ever-changing brain is responsible for toddler tantrums, teenage angst, and the battle of the sexes, and reveals the truth behind extra-sensory perception, deja vu and out-of-body experiences. But paradoxically, science may never quite explain the remarkable mechanism that makes each of us unique.