Once upon a time, there lived a man, a truth-seeker, who, more than anything else in the world, wished to know what is the true nature of reality. And in these times, in Cairo, there also lived a great sage woman who was said to know the answers to all possible questions. Hearing about the sage woman, the man, the truth-seeker, decided to travel to Cairo to learn the answer. Strangely, on the night before his journey, he dreamed of Cairo and of the sage woman, who told him that reality is nothing more than a very persistent dream.