Being and Time describes his project in the following way: "our aim in the following treatise is to work out the question of the sense of "being" and to do so concretely." Heidegger claims that traditional ontology has prejudicially overlooked this question, dismissing it on the basis that being is the most universal and emptiest concept, that is indefinable or obvious. Instead Heidegger proposes to understand being itself, as distinguished from any specific entities (beings). "'Being' is not something like a being." Being, Heidegger claims, is "what determines beings as beings, that in terms of which beings are already understood." Heidegger is seeking
Apollonius of Tyre (philosopher) Apollonius of Tyre (philosopher) Apollonius of Tyre (; fl. 50 BC), was a Stoic philosopher. Strabo describes him as living "a little before my time," and says he wrote "a tabulated account of the philosophers of the school of Zeno and of their books," and which appears to have been a short survey of the philosophers and their writings from the time of Zeno. He is mentioned by Diogenes Laërtius as the author of a work on Zeno. Whether this Apollonius is the same as the one who wrote a work on female philosophers, or as the author of the