How to Solve It: A New Aspect of Mathematical Method
George Polya
The Book of Five Rings
Musashi Miyamoto
Generative Energy: Restoring the Wholeness of Life
Raymond Peat
The Collected Works of C. G. Jung : Aion
C. G. Jung
Hypercomplex Numbers: An Elementary Introduction to Algebras
I. L. Kantor & A. S. Solodovnikov