36 A GREAT CONFESSION CHAP. 



human ideas of adjustment and design 

 are apt to insinuate themselves, assuredly 

 the same ideas not only may, but must 

 be comprehended under such a phrase 

 as "interdependent processes." Paint- 

 ing, for example, is an interdependent 

 process, and both in its execution and 

 results its interdependence lies in purely 

 physical combinations of visible and 

 touchable materials. Yet Sir Thomas 

 Lawrence spoke with literal truth when 

 he snubbed a questioner as to the 

 mechanics of his art by telling him 

 that he mixed his colours with brains. 

 The whole of chemical science consists 

 in the knowledge of interdependent 

 processes which are (what we call) purely 

 physical, whilst the whole science of 

 applied chemistry involves those other 

 interdependent processes which involve 

 the co-operation of the human mind and 

 will. 



