154 SCIENCE AND PHILOSOPHY OF THE ORGANISM 



in a certain state of manifestation, there will always be or 

 go on only one specifically determined event and no other. 



I do not give the name of " causality ' to this principle 

 of natural necessity or determination. Causality relates to 

 a particular kind of changes exclusively, and the relation 

 entelechy bears to it will be discussed later on. Our 

 principle of necessity or univocal determination relates to 

 everything that may be or happen in the universe, without 

 any reference to the character and nature of the changes in 

 the case of things that happen. Of course, this principle 

 holds, whether entelechy plays its part in a series of events 

 or not. The facts in the universe that originate in entelechy 

 will be univocally determined as such whenever entelechy is 

 such as it is, and entelechy is either of this or of that deter- 

 mined kind. And, moreover, any single spatial occurrence 

 induced or modified by entelechy has its previous single cor- 

 relate in a certain single feature of entelechy, as far as it is 

 an intensive manifoldness. It would be quite inconceivable 

 to assume anything else, though our assumption leads to 

 the consequence strange as it is that nothing really new 

 can happen anywhere in the universe. All happening is 

 " evolutio" in the deepest meaning of the word. 



We repeat once more that even when dealing with those 

 entelechies which govern action, we never have to do with 

 true psychical facts, but only with natural events. But we 

 must now refer to a certain most remarkable relation which 

 is generally expressed in psychological terms. In the 

 philosophy of nature we are not allowed to speak of any 

 " freedom " of acting, in the real and strict sense of the 

 word, in the sense that is contrary to univocal determina- 

 tion. It is quite impossible to imagine that, with given 



