Question 1

What is the best book to start with?

Accepted Answer

A scholarly introduction to his logic that quotes his own formulations about plurality, beside the Summa of Logic in translation if one is available The slogan is the obstacle. His wording is technical and plural. Seeing the difference is the lesson.

Question 2

What is the most famous quote?

Accepted Answer

This library does not measure fame, and it does not rank lines by how often they are shared. The first line it files for William of Ockham that is not marked Questionable or Misattributed is “It is futile to do with more what can be done with fewer.” (Summa Logicae, part I, chapter 12, the parsimony formula in his Latin, in English, Paraphrase or translation).

Question 3

What is the most misquoted line?

Accepted Answer

No line filed for William of Ockham is marked Misattributed. The nearest doubt is Questionable, which is not the same thing: “Entities are not to be multiplied beyond necessity.” Ockham repeatedly insists that plurality is not to be posited without necessity, in several wordings. The neat English sentence, and the Latin tag that matches it, are later capsules, not a sentence he is known to have written. The badge stays Questionable.

Question 4

What is one key idea, in a sentence?

Accepted Answer

Parsimony: Do not posit more entities than an explanation needs, which is a rule of theory rather than a claim that the world is simple.