A time map at the beginning of this ambitious volume lays out the journeys to be undertaken, tracking several streams of thought. These include philosophical themes starting with early primitive sacred Asian, Middle Eastern, and ancient Greek ideas and advancing through the major 20th-century philosophers. There are also humanitarian themes, including "third wave" and existential schools, beginning with Vives and Weyer in the 16th century and going up through Rogers, Maslow, and May to Yalom in the 21st. Other tracks include neurosciences, from Paracelsus through Kandel and Snyder; sociocultural ideas, from Hegel and Weber through Goffman, Minuchin, Haley, Benjamin, and Keisler; "psychoscience" developments from Fechner, Galton, and Wundt through Miller, Chomsky, Bandura, Beck, Ellis, and Kohlberg; psychoanalytic thinking from Freud through Kohut and Kernberg; and "personalogic" themes, from James through Millon, Cloninger, Wachtel, Gardner, Sternberg, and Linehan—among others. These broad themes are cross-cut by other dominating stories: the development of scientific thinking; asylums and the appreciation for human potential; classification of psychiatric disorders; brain science; studies of consciousness; and studies of thought, cognition, behavior, interpersonal relations, evolutionary theory, human adaptation, and more.