This is a classic work, selected for its great cultural, spiritual and intellectual importance to compose the catalog of works reedited and republished by True Wisdom Books. This edition is a facsimile reproduction faithful to the original book, optimized through software, and it is in perfect condition for reading. However, due to its age, the book may occasionally contain some imperfections, as marks or spots on some pages. We wish you all a pleasant and fruitful reading.