In Plato's Republic, the Analogy of the Sun famously points out that as the Idea of the Good relates to the knowable Forms so does the Sun to the visible things. Yet, no one has ever questioned whether the consequences claimed to be caused by the sun – among them especially the vital genesis of all physical things – can, based on Plato's philosophy, actually be caused by the material body of the sun. Taking this as a point of departure, (...) the present article looks into whether one can reveal more of the Analogy, just as Socrates himself frequently emphasises the incompleteness of his presentation. The article thus develops a series of detailed arguments to propose a differentiation of each analogical relation into two subrelations, which imply a transcendent principle and an immanent representation of this principle on both sides of the Analogy. Implementing this differentiation bears the potential to solve existing tensions within the interpretation of Republic VI and VII, it allows for further systematic considerations about, among others, the Good and the Beautiful and it may help to contextualise Plato's Analogy historically. (shrink)

In book IX of the Republic, Socrates offers a strange mathematical calculation, which claims to prove that the tyrant lives exactly 729 times less pleasantly than the king. For the first time, a complete and detailed reconstruction of this difficult text and its underlying structure is offered in the present article. It thereby proves that the distinction between ‘pleasure’ and the ‘image of pleasure’ is one among the keys to understanding the passage. It is furthermore shown how the whole calculation (...) is based on Plato’s ontology of dimensions and therefore proves that this theorem can be taken into account at least already for the time of the Republic. (shrink)

In 2005, an Egyptian dialogue’s editio princeps was published, named by its editors the ‘Book of Thoth’. While prior research on the relation between this dialogue and the Corpus Hermeticum could not identify far reaching parallels, another relation has not been taken into account yet: the relation to Plato’s critique of writing in the Phaedrus. The present article argues that very likely the Book of Thoth forms a source of the Platonic text, to which Plato responds with a diametrically opposed (...) criticism. To underline the argument, literal and thematic parallels are pointed out in a first step. Then, secondly, the focus is put on the order of the two texts. Finally, a systematic comparison between the Platonic and the Egyptian understanding of scripture underscores the argument. Thematic parallels and literal correspondences are numerous and therefore suggest excluding a similarity by accident: In the Book of Thoth we grasp a concrete Egyptian source of Plato for the first time. (shrink)

The study reconstructs the concept of the image as the basic concept of Plato's philosophy. Within the overall framework of this philosophy of the image, the appearance of the invisible in itself rather than the depiction of the likewise visible proves to be its uniform core. The picture thus moves into the direct vicinity of the body and is finally integrated into the ontology of the sequence of dimensions. This implies far-reaching reinterpretations of the line and cave parables as well (...) as art criticism and establishes systematic references to the ontology of ideas, to the philosophy of language and the doctrine of parables as well as to Plato's own dialogue design. Plato's concept of the image is thus not merely a deprecating figure of thought, but constitutively dialectical: he formulates not only the differentiation of reality, but also the connection between the sensual and the spiritual, and consequently the unity of reality. Understanding the sensual world as an image does not mean declaring it meaningless or worthless, but to really come to terms with it. (shrink)