Volume Two of
The Collected Works of Ken Wilber
includes:
•
The Atman Project: A Transpersonal View of Human Development
(1980) unites Eastern and Western approaches into a single, coherent framework, integrating views from Freud to Buddha, Gestalt to Shankara, Piaget to Yogachara, Kohlberg to Krishnamurti.
Up from Eden: A Transpersonal View of Human Evolution
(1981) describes evolution as a magnificent journey of Spirit-in-action, drawing on theorists from Jean Gebser to Jürgen Habermas.
•  The essay "Odyssey: A Personal Inquiry into Humanistic and Transpersonal Psychology" and a
New Age
interview with Ken Wilber.