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
Also sprach Zarathustra (Strauss) clarinet in B-flat, 3 bassoons, contrabassoon, 6 horns in F and E, 4 trumpets in C and E, 3 trombones, 2 tubas, timpani, bass drum, cymbals, triangle, glockenspiel, bell on low E, organ, and strings: 2 harps, violins I, II (16 each), violas (12), cellos (12), and double basses (8) (with low C string). The piece is divided into nine sections played with only three definite pauses. Strauss named the sections after selected chapters of Friedrich Nietzsche's novel "Thus Spoke Zarathustra": These selected chapters from Nietzsche's novel highlight major moments of the character Zarathustra's philosophical journey in the novel. The