"I am not able to stay," replied the boy. "It is necessary that I should go at once, as I have to return by daybreak to the place whence I came." "May dogs worry you, and cats tear you, you stubborn boy," growled the old witch angrily. "If I tell you the way," she added, "it will only be upon condition that you bring me this jar full of the Water of Many Colours, which flows from the fountain in the courtyard of the castle; and if you do not bring it to me, I will change you into a lizard for all eternity." "Agreed!" cried the boy in return. Then the old woman called a poor dog, which looked very thin and wretched, and said to it: "Up! conduct this good-for-naught to the castle of Go and Return Not, and be careful that you inform my friend of his arrival." The dog snarled, shook himself savagely, and set forth. At the end of about two hours they arrived in front of a very black, enormous, and gloomy castle, whose portals stood wide open, though neither light nor sound gave any indication that it was inhabited; even the rays of the moon, as they were reflected upon the sombre and lifeless mass, seemed to make it still more horrible. As he went forward the dog began to howl; but the boy, who knew not whether this was the giant's hour for sleep, stopped and rested himself timorously against the trunk of a withered and leafless wild olive, which was the only tree to be found in that parched and naked district. "Heaven help me!" exclaimed the boy. "Cross! cross!" responded a sad voice among the branches of the olive. Joyfully the boy recognized the hermit owl which the swallow had mentioned, and said to it in the language of birds: "Poor little owl, I beg you will help and guide me. I am come in search of the Bird of Truth, and I have to carry the Water of Many Colours to the witch of the tower." "Do not do that," responded the owl; "but when you have filled the jar with the clear, pure water that flows from a spring at the foot of the fountain of Water of Many Colours, go in quickly to the aviary, which you will find in front of the doorway; do not take any notice of the various coloured birds that will come to meet you and deafen you by all shouting out together that they are the Bird of Truth; then seize a little white bird which the others thrust on one side and persecute ceaselessly, but cannot kill, because it cannot die. But go quickly, for at this moment the giant is just going to sleep, and his sleep only lasts for a quarter of an hour!"