Ethical dualism or, as theorized by Descartes, between thought and extension. Ethical dualism on the other hand highlights the moral dimension instead or in addition to the metaphysical one, and envisions an inherent situation of conflict between two antagonistic forces, like light and darkness, Good and Evil. One of the most known and clear-cut interpretations of ethical dualism is the one conceptualized by Zoroastrianism, the ancient Persian religion, which bases its thought on the figure of the prophet Zoroaster (or Zarathustra), who claimed the existence of two original and contrasting principles, Ahura Mazda and Ahriman, respectively representing the forces of Good and
Thus Spoke Zarathustra the Bible. Common's poetic interpretation of the text, which renders the title "Thus Spake Zarathustra", received wide acclaim for its lambent portrayal. Common reasoned that because the original German was written in a pseudo-Luther-Biblical style, a pseudo-King-James-Biblical style would be fitting in the English translation. The Common translation remained widely accepted until more critical translations, titled "Thus Spoke Zarathustra", were published by Walter Kaufmann in 1954, and R.J. Hollingdale in 1961, which are considered to convey more accurately the German text than the Common version. Kaufmann's introduction to his own translation included a blistering critique of Common's version; he notes