Hegel and the Consequentia Mirabilis

History and Philosophy of Logic 39 (4):357-364 (2018)
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In this paper I argue that Hegel’s treatment of dialectical inferences, in particular of Plato’s dialectics in the Lectures on the History of Philosophy, belongs to the history of the logical rule that, from Gerolamo Cardano to Bertrand Russell, is known as consequentia mirabilis. In 1906 Russell formalises it as follows: and its correspondent positive form as My paper has two parts. First, I show that dialectical inferences, for Hegel, involve sentences of the form and. Hegel, following Plato, stresses that these inferences are das Wunderbare, the marvellous element of dialectical reasoning. In this sense Hegel’s view belongs to the history of CM from a perspective that is both terminological and logical. Second, I stress the peculiarity of Hegel’s CM. In a classical setting, the conditional is admissible and from we can, by CM, derive, and from, by CM, infer. However, in Hegel’s analysis it is evident that we can neither infer from, nor from. Rather, in dialectical inferences what we can vali...



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Elena Ficara
University of Cologne (PhD)

Citations of this work

Hegel’s Interpretation of the Liar Paradox.Franca D’Agostini & Elena Ficara - 2021 - History and Philosophy of Logic 43 (2):105-128.

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References found in this work

Mind and World.John McDowell - 1994 - Cambridge: Harvard University Press.
Mind and World.Huw Price & John McDowell - 1994 - Philosophical Books 38 (3):169-181.
Mind and World.John Mcdowell - 1994 - Philosophical and Phenomenological Research 58 (2):389-394.

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