Threefold

“It has been thought suspicious that my divisions in pure philosophy almost always turn out to be threefold. But that is the nature of the matter.”” – Immanuel Kant (1724-1804).

All the faculties  
of the mind:
cognition, (dis)pleasure, desire. 

The first is understanding, 
a priori lawful 
Nature perceived and apprehended. 

The second is a feeling 
formed by the power of judgment, 
the purpose of art. 

The third gives reason 
to a final end: 
Freedom.