The paper provides a reconstruction of the notion of material Apriori while exhibiting the anti-Kantian inspiration and factual grounding thereof. The attempt is made to show that a non-formal Apriori obtains because the sensuous has a normative character; further, that the difference between material and formal eidetic laws is rooted in the difference between sensuous contents, given in experience, and intellectual contents, originating in activities of judgement. The material Apriori is not independent of all experience, since it is grounded on (...) sensuous eidetic contents and thus depends on the latter’s givenness and characteristics. It is thanks precisely to this ,contingency‘ that it has an ontological significance. (shrink)

The dissertation faces the problem of the meaning and the function of contradiction within Hegelian logical system. The dissertation is made of six chapters. The first one highlights the ambiguity of the contradiction within Hegel’s logic. Contradiction has three main meanings: first, the metaphorical meaning (contradiction denotes a strong but not contradictory opposition); second, contradiction has a critical-negative value and corresponds to the mistake of Understanding; third, contradiction is characterized by a properly contradictory structure and, at the same time, it (...) has an ontological value. The last value represents the most important and the specifically hegelian meaning of the concept of contradiction, i.e. the meaning of the contradiction as regula veri. In the second chapter negation, namely the constitutive structure of contradiction, is analyzed. In particular, its ontological and self-referential character is underlined. The third chapter is focused on the comparison between the hegelian concept of contradiction and the different ways contradiction is conceived in formal logic and philosophy of language: the semantic definition, the syntactic one, the pragmatic definition and finally the ontological one. On the basis of these considerations a general explicative model of the contradiction is outlined. This model is applied in the analysis developed in the second part of the dissertation, dedicated to the specific meaning contradiction assumes in the different sections of Hegelian logical system. The fourth chapter examines the way contradiction is conceived in the Doctrine of Being. The becoming sheds light on the contradictory nature of being and nothing; in the finite the contradictory nature of the determinate being turns out to be concretely developed. The fifth chapter is focused on the analysis of the determinations of reflection, in order to show the contradictory structure of essence and explain the real meaning of the Hegelian claim: “all things are inherently contradictory”. The topic of sixth chapter is the role of contradiction in the Doctrine of the Concept and, more specifically, in the dialectic of the universal, particular, and individual concept and on the way this dialectic has a further development within the logical idea of life. The dissertation ends with some final considerations resuming the main results of the research and the constitutive role of contradiction in Hegelian logic: contradiction is not only one of the many determinations of the logical system, because it turns out to has a trans-categorical value according to which it represents an internal and determining structure of all the logical determinations. The contradiction is their principle of determination, the structure in which every logical category realizes its own truth. (shrink)