Book excerpt: The High and Deep Searching Out of the Three Principles. Contents: Of the Original Matrix, or Genetrix; Further of the Genetrix; Concerning the Birth of Love; Of the Wellspring of Light; Of the Wisdom of God, and of the Angelical World; Of the World, and also of Paradise; Of the True Corner Stone; Of the Transitory, and of the Eternal Life; Of the Threefold Life; How Man may find himself; Of the True Knowledge, what man is; Of the True Christian Life and Conversation; Of Christ's most precious Testaments; Of the Broad Way, and of the Narrow Way; Of the Mixed World and its Wickedness; Of Praying and Fasting; Of God's blessing in this World; Of Death, and of Dying.