自从古希腊哲学发韧 ,对于存在者之存在的本质的发问便被放置到对存在者之存在根据 (理由 )的探索之中。在理性本体论产生之后 ,事物存在的“理由”往往是从其合理性方面得到解释。这里知性形而上学与辩证法的立场是根本不同的。黑格尔对理性本体论的扬弃主要在于 ,旧的形而上学本体论实际上是一种“本质性的本体论” ,而思辨哲学则是一种“目的性的本体论”。但它们都仍然属于本体论上的理由解释的层面。在本世纪哲学从认识论上的“理由”重新回到存在之本质的追问的总体思想语境之中 ,黑格尔的目的论思想再次显示出其特殊的意义 Since the beginning of ancient Greek philosophy, the questioning of the essence of the being’s existence has been placed in the exploration of the existence of the existence (reason). After the emergence of rational ontology, the “reason” for the existence of things is often explained from its rationality. Here the fundamentals of intellectual metaphysics and dialectics are fundamentally different. Hegel’s sublation of rational ontology mainly lies in the fact that the old metaphysics ontology is actually an “essential ontology,” while speculative philosophy is a “purposive ontology.” But they all still belong to the level of ontological justification. In the general philosophical context in which philosophy of this century returned from epistemological “reason” to questioning the existential essence, Hegel’s teleological thought once again demonstrated its special significance