Human Understanding. 26J 



furnished are either Simple or Complex* 



Simple Ideas are such as exist in the mind 

 under one uniform appearance, and can- 

 not be divided into two or more ideas > 

 for example, a colour, a sound. 



Complex Ideas consist of several simple 

 Ideas united in the same representation, 

 appearance or perception; and they either 

 come into the mind thus united from the 

 operation of things without us,as the idea, 

 solidity and figure, is caused by the same 

 ball ; therefore in the complex idea of the 

 ball we conceive such ideas as co-existent 

 and concomitant ; or else when such sim- 

 ple ideas are united by the mind, as in the 

 idea of law, obligation, ^c. 



In the production of Complex Ideas 

 which are formed at the pleasure of the 

 mind, it exerts three voluntary acts, viz* 

 Co mposition,Abstr action, and Comparison* 



Composition is joining together two or 

 more Simple Ideas, and considering them 

 as one picture or representation. By 

 composition we have the ideas of num- 

 ber, extension, &c. 



Abstraction is separating from a par- 

 ticular idea those circumstances which 

 render it the representative of a single 



