Dreams surely are difficult, confusing, and not everything in them is brought to pass for mankind. For fleeting dreams have two gates: one is fashioned of horn and one of ivory. Those which pass through the one of sawn ivory are deceptive, bringing tidings which come to nought, but those which issue from the one of polished horn bring true results when a mortal sees them.
HomerZeus most glorious and most great, Thundercloud, throned in the heavens! Let not the sun go down and the darkness come, until I cast down headlong the citadel of Priam in flames, and burn his gates with blazing fire, and tear to rags the shirt upon Hectors breast! May many of his men fall about him prone in the dust and bite the earth!
Homer'Yea and I beheld Sisyphus in strong torment, grasping a monstrous stone with both his hands. He was pressing thereat with hands and feet, and trying to roll the stone upward toward the brow of the hill. But oft as he was about to hurl it over the top, the weight would drive him back, so once again to the plain rolled the stone, the shameless thing. And he once more kept heaving and straining, and the sweat the while was pouring down his limbs, and the dust rose upwards from his head.
Homer