PREFACE. xlv 



Thus It appears that Ariftotle added nothing to the morals that 

 he and his mafter had learned from the Pythagoreans : And with 

 regard to politics, it would, I think, be unfair to compare his un- 

 flnilhed work upon that fubjed: with the books of polity and of 

 laws written by Plato, whole works, upon morals and politics to- 

 gether, are of ten times greater bulk than his other w^orks, whereas 

 the greater part of Ariftotle's writings are upon Natural Philofophy ; 

 at the fame time it mufl be owned, that what he has written upon 

 poUtics, unfinifhed as it is, is a very valuable work ; and there is a 

 Supplement written to it by a Florentine nobleman, of the name of 

 Strozza, which is valuable for the matter ; and, as to the ftyle, he 

 has imitated fo well the ftyle of Ariftotle, the beft didadic ftyle I 

 think in the VN'orld, efpecially in his morals and politics, that, for 

 my part, I am not able to diftinguiih the one from the other ; fo 

 well was the Greek language at that time not only underftood in 

 Italy, but written, and, as we are informed, even fpoken. 



I come now to fpeak of the greateft of all Ariftotle's works, I 

 mean his Logic, which he firft diftinguiflied from Dialectic : Whereas 

 the Dialedic of Plato is a mixture of Logic and Metaphyfics ; for 

 it afcended to the ideas of the higheft abftradion, fuch as the fu' 

 preme good and the fiipreme falr^ and at the fame time it taught 

 the method of invcftigatlng thofe ideas. Now Ariftotle diftinguiflied 

 all the three, I mean Logic, Dialedic, and Metaphyfics, and made 

 feparate fciences of each ; for among other things that Ariftotle 

 added to Philofophy, one was the diftinguifliing accurately the feve- 

 ral branches of it, which before lay confufed together, as it were, in 

 a heap. 



By Logic, Ariftotle means that fcience which explains the progrefs 

 ©f the difcurfive faculty of the Mind in demonftration or reafoning 



of 



