xvin ORGANISATION AND EVOLUTION 435 



conditions and the existence are transformed. The 

 conditions are used by the mind as its instruments, 

 and the existence which it contemplates is not that 

 which it knows, but the higher life which it sees to 

 be possible. In a certain sort we have treated mental 

 development throughout as a process in which an implicit 

 purpose gradually comes into view. But we must bear in 

 mind that in proportion as it comes into view, it is changed 

 in character. The implicit purpose of the lower type is 

 to maintain itself, to satisfy the wants and impulses be- 

 longing to that type. But the very fact that impulse 

 comes to understand itself as desire implies that the type 

 is changed to something better, and the same holds at each 

 higher stage. If a man understood the real mental and 

 moral forces that underlie his cherished ambitions, his 

 ambitions would thereby be changed. We must therefore 

 understand the organisation of life as changing not only 

 in method but in plan, as it passes from the control of 

 heredity and the struggle for existence to that of Reason 

 and purpose. At its lowest it is an organisation of be- 

 haviour directed to the maintenance of the type. It passes 

 to organisation directed to the attainment of purposes 

 varying in scope and character, and ultimately becomes 

 an organisation for the comprehensive purpose of bringing 

 life itself to the perfection of its development. 



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