Happiness Is a Serious Problem: A Human Nature Repair Manual
Dennis Prager
Longman Dictionary of Common Errors
J. B. Heaton & N. D. Turton
Wilber’s AQAL Map and Beyond - Summary
Rolf Sattler
The Spectrum of Consciousness
Kenneth E. Wilber
Quest Books (2)
Approximation Theory and Algorithms for Data Analysis
Armin Iske
The Secret of Light
Walter Russell