What brain disorders can tell us about ourselves -- Our intensely social nature : the autism spectrum -- Emotions and the integrity of the self : depression and bipolar disorder -- The ability to think and to make and carry out decisions : schizophrenia -- Memory, the storehouse of the self : dementia -- Our intrinsic creative capability : brain disorders and art -- Movement : Parkinson's and Huntington's diseases -- The interplay of conscious and unconscious emotion : anxiety, post-traumatic stress, and faulty decision-making -- The pleasure principle and freedom of choice: addictions -- That's all, folks -- Sexual differentiation of the brain and gender identity -- Consciousness : the great remaining mystery of the brain -- Conclusion : coming full circle.