Psychology is the science of mental life. William James asks: Why and, above all, how do we think? What motivates us and what makes us feel or do certain things? How does the brain work? And where do we derive our sense of self? Tom Butler-Bowdon guides his readers through the last hundred years of psychology's history and presents the most exciting ideas from this period. In addition to psychologists, his book features neurologists, psychiatrists, biologists, communication experts, and journalists, as well as a dockworker, a violence expert, and a novelist. It highlights the key statements and approaches of renowned figures such as Freud, Adler, Jung, Skinner, James, Piaget, and Pavlov, as well as contemporary thinkers like Gardner, Gilbert, Goleman, and Seligman. The summary of the 50 most important works and their associated key statements provides insight into psychology.