Labyrinth 'Do not enter this house.' It reads above the door. 'Explored by the thread Is this ground plan', Tells me Ariadne's offspring Hypsipyle: 'Look ahead: Behind the entrance You have no more light From above or below: Gone is one dimension. Behind the corners It grows dusky grey, You grope along the walls: Gone the second dimension. At the closing stone, The pedestal of nothing, You stop in darkness: Gone the third dimension. You don't grasp a bit, Grasp again in vain, Dead in your tracks: Gone the fourth dimension.' 'Thanks, Hypsipyle, back:' Out of a camp of misery I rescue one human life, Ship to an isle with palms, Sleep beneath the sky.