Among the many worlds which man did not receive as a gift of nature, but which he created with his own mind, the world of books is the greatest. Every child, scrawling his first letters on his slate and attempting to read for the first time, in so doing, enters an artificial and complicated world; to know the laws and rules of this world completely and to practice them perfectly, no single human life is long enough. Without words, without writing, and without books there would be no history, there could be no concept of humanity. And if anyone wants to try to enclose in a small space in a single house or single room, the history of the human spirit and to make it his own, he can only do this in the form of a collection of books.