Homer Quote

Friend, many and many a dream is mere confusion a cobweb of no consequence at all. Two gates for ghostly dreams there are: One gateway of honest horn, and one of ivory. Issuing by the ivory gate are dreams of glimmering illusion, fantasies, but those that come through solid polished horn may be borne out, if mortals only know them.

The Odyssey (ed. Anchor Books, 1961)