"Frequently!" Henry answered. "There is always business here, pressing in on him. In the week, he has responsibilities at the Mint. Then, when he comes here, there are so many visitors, distractions. But he has learnt the trick of coming late on Sundays, when no one is in the building except for me and Madame, who understand that he is not to be disturbed. Then he can work late into the night, sometimes even until sunrise on Monday."