摘要
Firstly, this paper is to illustrate through the analysis of Aristotelian texts that two kinds of necessity involved in the teleological account, the necessity απλωζand the necessity εξυποθεσεωζare related to an achievement of an endaccording to two thoroughly different ontological and logical grounds. Secondly, it is to bring the irreducibility of the teleological to non-teleological into organic development to unprecedented light so as to show how the ontological predominance of the finality over the material necessity may be adequately expressed by a logical implication, if it is appropriately stated and well distinct from other similar logical connectives such as the material implication and the biconditional if-and-only-if.
