Logic in the Torah

A Thematic Compilation by Avi Sion

Blog posts : "torah"

1. Logic in the Torah


1.   Introduction

There is evidently quite a bit of logic – inductive as well as deductive – to be found in the Tanakh (the Jewish Bible). Although this document aims, of course, primarily to convey narratives (they did this, they said that) and legislation (do this, don’t do that), it…

Read more

2. Adductive Logic in the Torah


1.   The art of knowing

Induction, as an epistemological concept, refers to the logical processes through which all propositions, and their various constituents, are gradually developed. Some philosophers have tended to define induction as the pursuit of general principles from particu…

Read more

3. Qal vaChomer


1.   Background

Jewish logic has long used and explicitly recognized a form of argument called qal vachomer (meaning, lenient and stringent). According to Genesis Rabbah (92:7, Parashat Miqets), an authoritative Midrashic work, there are ten samples of such of argument in the Tanakh: o…

Read more

8. A Fortiori Discourse in the Jewish Bible


Some 18 years after I published Judaic Logic, I returned to the subject of a fortiori argument in the Tanakh in A Fortiori Logic, and in this context discovered many additional instances.


1.   Introduction and summary

There are at least 46 instances of a fortiori discourse in …

Read more

4 blog posts

Blog Search

Blog Archive


There are currently no blog comments.