15. The Theory of Categories

Now we ask ourselves: how can a man arrive at concepts, when he has no experience in super-sensible worlds? If he had only the sense-reality, he could only have representations. But it is not requisite to ascend into super-sensible reality in order to form concepts. The seer can perhaps arrive more easily at a complete conceptual world, because he has of course learnt to know the forces, which form the concepts. You will find the spiritual-scientific explanation of what is here said in my Theosophy. A man arrives at his concepts because he causes them to stream down upon him in that form (formlich). Now how is it possible for a man to arrive at a network of concepts filled with content? The majority of people have only arrived at pure concepts in mathematics. Most men, of course, believe that concepts arrive through abstractions. Naturally that is not at all the origin of concepts. Even thinking men are in general quite unclear as to this. When I tried to make clear the self-constructiveness of the concept in The Philosophy of Freedom I had the opportunity of experiencing something very curious. You find elucidated there, in adverse connection with Herbert Spencer, that to start from outer experience is a thoroughly unsatisfactory mode of forming the concept. (p. 55, 1932 ed.)