Logical and Spiritual Reflections is now available in print (404p. A4) in hardcover ($40) and paperback ($25) editions (plus shipping expenses),
and as an eBook ($5).
In Defense of Aristotle’s Laws of Thought
is also separately available as a paperback (184p. A5, $10 plus shipping expenses), and as an eBook ($1.50).
To order online click on the following hyperlink: Books by Avi Sion in The Logician Bookstore

Book 3

In Defense of Aristotle’s Laws of Thought

This essay addresses, from a phenomenological standpoint, numerous modern and Buddhist objections and misconceptions regarding the basic principles of Aristotelian logic. Many people seem to be attacking Aristotle’s Laws of Thought nowadays, some coming from the West and some from the East. It is important to review and refute such ideas as they arise.


1. Logicians have to introspect

2. The primacy of the laws of thought

3. The ontological status of the laws

4. Fuzzy logic

5. Misrepresentation of Aristotle

6. Not on the geometrical model

7. A poisonous brew

8. The game of one-upmanship

9. In Buddhist discourse

10. Calling what is not a spade a spade

11. Buddhist causation theory

12. A formal logic of change

13. Buddhist critique of change

14. Different strata of knowledge

15. Impermanence

16. Buddhist denial of the soul

17. The status of sense perceptions

18. The status of dreams and daydreams

19. The status of conceptions

20. The laws of thought in meditation

21. Reason and spirituality

See also, regarding the Laws of Thought:

Future Logic, chapters: 2, 3, 20, 31.

Phenomenology, chapter IV-2.

Buddhist Illogic, chapters 1, 2.

Ruminations, chapters 1, 9.

A Fortiori Logic, chapter 3.1, appendix 7.3.