A Thematic Compilation by Avi Sion


Avi Sion (Ph.D, Philosophy) is an independent researcher and writer in logic, philosophy and spirituality. He resides in Geneva, Switzerland.

He has authored and published many books on these subjects, including: Future Logic (1990); Judaic Logic (1995); Buddhist Illogic (2002) ; Phenomenology (2003); The Logic of Causation (1999, 2003, 2010); Volition and Allied Causal Concepts (2004); Ruminations (2005); Meditations (2006); Logical and Spiritual Reflections (2008-9); A Fortiori Logic (2013).

These works can be freely studied online at: and, among others. And they, and others, can be purchased online at and at, among others. 

A full list of Avi Sion's websites, with links to them, can be found at:


Avi Sion, 2003