As such, it should not be confused with the many abridgements that omit key sections.The book presents lucid descriptions of human mental activity, with detailed considerations of the stream of thought, consciousness, time perception, memory, imagination, emotions, reason, abnormal phenomena, and similar topics. In its course it takes into account the work of Berkeley, Binet, Bradley, Darwin, Descartes, Fechner, Galton, Green, Helmholtz, Herbart, Hume, Janet, Kant, Lange, Lotze, Locke, Mill, Royce, Schopenhauer, Spinoza, Wundt, and scores of others. It examines contrasting interpretations of mental phenomena, treating introspective analysis, philosophical interpretations, and experimental research.It remains unsurpassed today as a brilliantly written survey of William James’ timeless view of psychology.