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In the lifetime of the Catalan philosopher and mystic, Ramon Lull (1232–c. 1316), the Iberian peninsula was the home of three great religious and philosophical traditions. Dominant was Christianity and the Catholic Church, but a large part of the country was still under the rule of the Moslem Arabs; and it was in Spain that the Jews of the Middle Ages had their strongest centre. In the world of Ramon Lull, the brilliant civilisation of the Spanish Moslems, with its mysticism, philosophy, art, and science, was close at hand; the Spanish Jews had intensively developed their philosophy, their science and medicine, and their mysticism, or Cabala. To Lull, the Catholic Christian, occurred the generous idea that an Art, based on principles which all three religious traditions held in common, would serve to bind all three together on a common philosophical, scientific, and mystical basis.
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Frances A. Yates (The Occult Philosophy in the Elizabethan Age (Routledge Classics))