from "Le Morte D'Arthur"

Arthur had a dream and "sent anon for a wise philosopher, commanding to tell him the signification of his dream. Sir, said the philosopher, the dragon that thou dreamedst of betokeneth thine own person that sailest here, and the colours of his wings be thy realms that thou hast won, and his tail which is all to-tattered signifieth the noble knights of the Round Table; and the boar that the dragon slew coming from the clouds betokeneth some tyrant that tormenteth the people, or else thou art like to fight with some giant thyself, being horrible and abominable, whose peer ye saw never in your days, wherefore of this dreadful dream doubt thee nothing, but as a conqueror come forth thyself."