"The river Ifing, where the waters are never frozen," replied Odin, quickly. The frost-giant looked surprised, but he only said:--
"You have answered rightly, O Wise One. And now tell me the names of the horses that draw the chariots of Night and Day."
"Skinfaxe and Hrimfaxe," promptly replied Odin. Vafthrudner turned and looked hard at this remarkable stranger who could speak so readily of things that no man was thought to know. Then he asked many more questions, to which Odin gave unhesitatingly the right answers; and soon the frost-giant began to feel afraid of the strange traveller who seemed to know more than the gods themselves. Anxiously he put the last question, saying, "Tell me, O Great One, the name of the plain on which the Last Battle will be fought." Now Vafthrudner knew that no mortal man could possibly answer this question, so he waited fearfully for Odin's reply.
"On the plain of Vigrid, which is a hundred miles on each side," came the answer; and at this the frost-giant began to quake with fear, for his boasted wisdom had been fairly met, and at last some one had come to Jötunheim to defeat him.
Now it was Odin's turn to ask questions; and he drew from this wisest of the giants a knowledge of things that happened long before the gods came to dwell in Asgard. He learned all the secrets that the giants guarded so carefully; and he made Vafthrudner tell him of the dim unknown future, and of the events that would shape the lives of gods and men. So eager was Odin to gain the desired wisdom that he forgot how long he had been sitting at the frost-giant's side and listening while Vafthrudner told him of the time when no gods were living, and of the time when no gods should be.
The long day waned, and the curious stars peeped out, and Mani--as he drove his horses over the western hills--wondered why Odin lingered so long in dreary Jötunheim. When the All-Father had learned all he desired to know, he rose up and said: "One last question I will put, O Vafthrudner; and by its answer we may judge which is the wiser of us two. What did Odin whisper in the ear of Balder as that shining one lay on the funeral pyre?" When the frost-giant heard this question he knew at last who it was that had been contending with him, and he answered humbly: "Who but thyself, O Odin, can tell the words which thou didst say to thy son? Thou art truly the wisest of all."