And the hermit answered: "I will tell you. That is a very large sarcophagus, larger than any that ever was made; one so rich and well carved was never seen. It is magnificent without, and still more so within. But you need not be concerned with that, for it can never do you any good; you will never see inside of it; for it would require seven strong men to raise the lid of stone, if any one wished to open it. And you may be sure that to raise it would require seven men stronger than you and I. There is an inscription on it which says that any one who can lift this stone of his own unaided strength will set free all the men and women who are captives in the land, whence no slave or noble can issue forth, unless he is a native of that land. No one has ever come back from there, but they are detained in foreign prisons; whereas they of the country go and come in and out as they please." At once the knight goes to grasp the stone, and raises it without the slightest trouble, more easily than ten men would do who exerted all their strength.

Lancelot, the Knight of the Cart