Psychiatric Studies
Carl Gustav Jung
Aldous Huxley
Nicholas Murray
The Truth About Illness and Disease
Robert N. Golden & Fred L. Peterson & Carla Weiland & Karen Weiland
Up From Eden: A Transpersonal View of Human Evolution
Kenneth E. Wilber
Positivism and Realism - Chapter 1
Moritz Schlick
After Collapse: The Regeneration of Complex Societies
Glenn M. Schwartz & John J. Nichols