Read the following passage carefully & answer the given question

Books are, by far the most lasting product of human effort. Temple crumple into ruins, pictures and statuses decay, but books survive. Time does not destroy the great thoughts contained in the books which are as fresh today as when they first passed through their author’s mind. These thoughts speak to us through the printed page. The only effect of time has been to throw out of currency. The bad products among books. Nothing in literature which is not good can live for long. Good books have always helped man in various spheres of life. No wonder that the worlds keep its books with great care.