This work of the Risale-i Nur Collection is of fundamental importance since it demonstrates, among other things, how religion and science may be blended and why they may not be separated…. “The key to the world is in man’s hand and is attached to his self. For while being apparently open, the doors of the universe are in fact closed. God Almighty has given to man by way of a Trust, such a key called the ‘I’, that it opens all the doors of the world; He has given him an enigmatic ‘I’ with which he may discover the hidden treasures of the Creator of the Universe.” (Pocket Series) - 115 pages. Paperback.