In Vol. 1, The Way of Illumination, Sufi Thoughts (3. There is One Holy Book), Hazrat points out:
" The Sufi has in all ages respected all such books, and has traced in the Vedanta, Zendavesta, Kabah, Bible, Qur'an, and all other sacred scriptures, the same truth which he reads in the incorruptible manuscript of nature, the only Holy Book, the perfect and living model that teaches the inner law of life: all scriptures before nature's manuscript are as little pools of water before the ocean."
