This is probably the most wide ranging and best book ever written about human psychology. Even though it is more than 100 years old, it still gives the best description of the width and range of human thinking and activities. Roughly speaking, there are two main areas in psychology: 1. The clinical psychology, psychoanalysis and treatment. That area was to a large part shaped by Freud. 2. The cognitive psychology which describes how we think and experience the world. That area was founded by William James, and this book is his main work The book was written before the separation of psychological science, philosophy and discussions about ethics and human values. It was also written before much of the cognitive psychology degenerated into investigations of white mice running through mazes. It can therefore give a wide ranging and consistent wiev of our thinking and experience.