CONFORMITY WITH PLAN 361 



could be run off like that. But it is quite unknown 

 to me. 



If we could observe our action-organ during the repetition, 

 we should see no more in it than when we looked at the mark- 

 organ. A number of impulses become active in accordance 

 with law, and they make bridges ; but they give us no mark- 

 sign. The command that dwells within them evades our 

 consciousness. 



SmaU wonder if the impulses that build up our bodies 

 elude our knowledge. 



And so it is self-evident that the whole impulse-system, 

 which is at once the architect and the director of our body, 

 is forever hidden from our view. As Kant would say, we 

 have to do with a transcendental subject (i.e. a subject lying 

 beyond what we can experience) far wider in its embrace 

 than the spirit, which embraces only the life of our ego. 



And so it is quite hopeless to try to explain through 

 our psychical experiences the life of other living organisms. 

 We do not even know the quality of the command given by 

 the impulses active in the mark-organ of another, which 

 nevertheless do permit of a certain analogy with the impulses 

 of our own mark-organ. And for all the other impulses we 

 cannot rely even on this very insecure analogy. 



There certainly are realities which remain inaccessible to 

 investigation, and of which we are able to form only a very 

 dubious image, deduced from their activities. But funda- 

 mentally biology, in so far as it is obliged to deal with the 

 organising factors of Nature, is in exactly the same case 

 as physics, which is able to judge of the unorganised forces of 

 Nature that form its province, only from their activities. 



But biology has a far more secure foundation than physics 

 and chemistry, proceeding as it does from the only stable 

 basis, the sense-qualities ; from these the surrounding- 

 worlds, with all their substances and forces, things, objects, 



