i8o ANTIENT METAPHYSICS. Book IV, 



or Subflantial Form (for thcle words are fynoni;nous)of the Triangle^ 

 or any other Figure of which he treats, otherwife he never could de- 

 nionftrate the feveral quahtics and properties of the figure relulting 

 from that Form. It is the fame in the works of Art, if they are ported 

 in their kind ; for in them theie muft be fomething principal, to which 

 every thing elfe in the piece is to be referred. Now, to fuppofe that it is 

 otherwife in the works of God, and that an Animal or Vegetable is 

 nothing but brute lifclefs Matter, with fo many qualities inherent in 

 if, but unconneded, and without any bond of union among them, 

 would be contrary to the whole analogy of Nature, in every part of 

 wliich we obfcrve a wonderful union and fubordinacy of things to 

 one another. But of this I have faid a great deal more in the 

 Firft Volume of this work*. 



Farther, there are two other grand Ideas, which never can be 

 derived from Senfation or Refledlion ; and yet they are fuch, that, 

 without them, we never can philofophife upon the fubjedl of God 

 or Nature, or indeed upon any other fubjed : The ideas, I mean, 

 are thofe of Caufe and Effccl. For, whatever Idea we may have from 

 Senfation or Refle£tion, of the thing that produus or the thing 

 -produced^ we never can derive from thofe fources the Idea of Pro- 

 du£lion, or of the one being the Caufe of the other. Mr David 

 Flume, therefore, argued very well upon the Principles of Mi: 

 Locke's philofophy, when he maintained, that we had no Idea of 

 Caufe and efFedt ; and that we only knew that one event preceded 

 another. 



There is alfo another Idea, of fovereign ufe in human life, the 

 foundation, as I have ihown t, of Virtue, and of every thing that 

 gives delight to the nobleft part of our Nature, which is neither an 

 Idea of Senfation nor Reflection. The Idea, I mean, is that of 

 Beauty^ which, though perceived in objeds of Senfe, is perfectly 



diftind 



• B. 2. chap. 2. 

 t P. 112. &C. 



