The quest to understand the most complex object in the known universe has been a long and fruitful one. These days we know a good deal about how the human brain works how our senses translate into electrical signals, how different parts of the brain process these signals, how memories form and how muscles are controlled. We know which brain regions are active when we listen to speech, look at paintings or barter over money. We are even starting to understand the deeper neural processes behind learing and decision-making. What we still don't have, though, is a way to bring all these pieces together to create an overarching theory of how the brain works. Researchers are currenlty focussing on bringing all the phenomena of a brain into one simple equation and a neural theory of everything.