318 SIR WILLIAM Hamilton's philosophy : 



SECOND PART OF NOMOLOGICAL PSYCHOLOGY. NOMOLOGY OF THE 



FEELINGS. , 



The laws, which govern our capacities of enjoyment, in relation to 

 the end which these propose, namely the Pleasurable, has been denomi- 

 nated, especially on the Continent, Aesthetic ; but the term Apolaustic 

 would have been more appropriate (I. pp. J 23-4.) 



THIRD PART OF NOMOLOGICAL PSYCHOLOGY. NOMOLOGY OF THE 



CONATIONS. 



The Nomology of our Conative powers, to which the name of Prac- 

 tical Philosophy may most properly be applied, is the science of the 

 laws regulative of our "Will and Desires in relation to their end, namely 

 the Good. Contemplating man as an individual, this science is called 

 Ethics; contemplating him as a member of society, it is called Politics : 

 and these two branches admit of further subdivision (I. p. 124). 



THIKD DIVISION OF PHILOSOPHY— INFEKENTIAL PSYCHOLOGY. 



Of existence in itself or existences in themselves we know and can 

 know nothing immediately, for we can know things only as they 

 appear to us, that is, not as substances, but as phenomena, not abso- 

 lutely, but in relation to us and to our faculties. Moreover all that 

 is thus capable of being known relatively is not necessarily relative to 

 us : for (1) we can know only those properties of things which we 

 have faculties of knowing and there may be properties knowable by 

 other limited intelligences, to which we have no faculties adapted ; 

 and (2) even those properties which we do know are known not in 

 their native purity, but only as they are modified by our faculties 

 (I., pp. 140-8.) 



Since then we know nothing but phenomena, the existence of sub- 

 stances, which these manifest to us, can be merely an inference from 

 them (I., pp. 125, 138). Yet such inferences with regard to facts 

 unknown in themselves may be rendered perfectly legitimate as 

 necessary to explain known phenomena (I., p. 125). Of such infer- 

 ences we may take as examples those which relate to (1) the Mind of 

 Man, (2) the Universe we live in, (3) its Creator. 



1. The Mind of Man, as already proved, possesses a power of self- 

 determination ; but the material universe is subject to an irresistible 

 causation. The mind, therefore, cannot be explained as the result of 

 material organisation, and its existence is consequently independent of 

 the material organism with which it is associated (I., p. 29). That 



