 Jewish mysticism has influenced the thought of some major Jewish theologians, philosophers, writers and thinkers in the 20th century, outside of Kabbalistic or Hasidic traditions.The first Chief Rabbi of Mandate Palestine, Abraham Isaac Kook was a mystical thinker who drew heavily on Kabbalistic notions through his own poetic terminology.His writings are concerned with fusing the false divisions between sacred and secular, rational and mystical, legal and imaginative.