The Fourth Turning
William Strauss & Neil Howe
On the Logic of the Social Sciences
Jürgen Habermas
Nine Lenses on the World: The Enneagram Perspective
Jerome Peter Wagner
Lo Inconsciente en la Vida Psíquica Normal y Patolólica
C. G. Jung
The Karma of Untruthfulness: V. 1
Rudolf Steiner
The Private Production of Defense
Hans-Hermann Hoppe