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Logic in the Torah

A Thematic Compilation by Avi Sion

Blog posts : "logic"

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…

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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…

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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…

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5. The Language of Biblical A Fortiori

 

In this essay, my purpose is to analyze the language actually used in Biblical a fortiori statements. An empirical study, without preconceptions.

 

1.Introduction

A Biblical a fortiori argument, as we saw, usually consists of two more or less explicit sentences, one of which is the…

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6. Miriam’s A Fortiori Argument

 

The a fortiori argument made by Miriam, the sister of Moses, in Numbers 12:14-15, plays an important role in rabbinical discussions relating to such arguments, notably in the Gemara (the commentary on the Mishna). For this reason, I have had to analyze it in considerable detail.

 

1. …

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7. Louis Jacobs’ Contribution

 

Rabbinic Thought in the Talmud (2005), by Louis Jacobs, contains an essay devoted to “The Qal Va-Homer Argument in the Old Testament”[1]. We shall here analyze the contributions made in this late essay of his (Jacobs z”l passed away in 2006). Having [before I came across this essay in …

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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 …

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9. A Fortiori Arguments in the Christian Bible

 

1.   Disclaimer

In this chapter, I am called upon for the sake of comprehensiveness to comment on some of the a fortiori discourse found in Christian literature, especially the Gospels. I must stress that I do not intend the following treatment to be exhaustive. I am merely breaking gr…

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10. Logic in the Koran and Hadiths

 

1.   Disclaimer

In this chapter, I am called upon for the sake of comprehensiveness to comment on some of the a fortiori discourse found in Moslem literature. I must stress that I do not intend the following treatment to be exhaustive. I am merely breaking ground for a more extensive t…

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