ten o'clock
There are only about 30,000 really important books in the world . I suppose about 5,000 of them were written in the English language , and 5,000 more have been translated . '' `` You are open in the evenings ? '' `` Until ten o'clock . A great many of my best customers are those who are at work all day and can only visit bookshops at night . The real book-lovers , you know , are generally among the humbler classes . A man who is impassioned with books has little time or patience to grow rich by concocting schemes for cozening his fellows . ''