Posterior Analytics
Book I
Chapter 28
Table of Contents
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Catalogue
Posterior Analytics
Translated by G. R. G. Mure
Book I
Chapter 28
A single science is one whose domain is a single genus, viz. all the subjects constituted out of the primary entities of the genus – i.e. the parts of this total subject – and their essential properties.
One science differs from another when their basic truths have neither a common source nor are derived those of the one science from those of the other. This is verified when we reach the indemonstrable premisses of a science, for they must be within one genus with its conclusions: and this again is verified if the conclusions proved by means of them fall within one genus – i.e. are homogeneous.
 Book I Chapter 27 |
 Book I Chapter 29 |