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Avi Sion Links

A brief guide to Avi Sion's websites and books


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 can be purchased online at and at, among others. 

Avi Sion, 2013.