Philosophy has never tolerated contradictions. One may say that it was born exactly in order to eliminate them by recourse to the ultramundane order of Plato's Ideas, or to the principle of non-contradiction in Aristotle's logics and metaphysic. One may suggest, on the other hand, that the famous reversal expressed in Karl Marx's eleventh thesis on Feuerbach is basically directed against this traditional conciliatory essence of philosophy. That's another reason for the "definitive" supremacy of Hegel, from the standpoint of metaphysical thought, and, of course, for the conservative appearance of his theory. When Berthold Brecht opposed a non-Aristotelian, or epic, theatre to the one described and prescribed by Aristotle's Poetics, he was clearly re-vindicating the resistance of contradictions to the pretended force of mediating reason.