Then he drew up a great draught of the sparkling water, and Odin quenched his divine thirst and went away rejoicing, although he had left an eye behind. Even the gods could not be wise without struggle and toil and sacrifice.
So Odin became the wisest in all the worlds, and there was no god or giant that could contend with him. There was one giant, however, who was called all-wise in Jötunheim, with whom many had contended in knowledge, with curious and difficult questions, and had always been silenced and killed, for then, as now, a man's life often depended on his wisdom. Of this giant, Vafthrudner, and his wisdom many wonderful stories were told, and even among the gods his fame was great. One day as Odin sat thinking of many strange things in the worlds, and many mysterious things in the future, he thought of Vafthrudner. "I will go to Jötunheim and measure wisdom with Vafthrudner, the wisest of the giants," said he to Frigg, his wife, who was sitting by.
Then Frigg remembered those who had gone to contend with the all-wise giant and had never come back, and a fear came over her that the same fate might befall Odin.
"You are wisest in all the worlds, All-Father," she said; "why should you seek a treacherous giant who knows not half so much as you?"
But Odin, who feared nothing, could not be persuaded to stay, and Frigg sadly said good-by as he passed out of Asgard on his journey to Jötunheim. His blue mantle set with stars and his golden helmet he left behind him, and as he journeyed swiftly those who met him saw nothing godlike in him; nor did Vafthrudner when at last he stood at the giant's door.
"I am a simple traveler, Gangraad by name," he said, as Vafthrudner came gruffly toward him. "I ask your hospitality and a chance to strive with you in wisdom." The giant laughed scornfully at the thought of a man coming to contend with him for mastery in knowledge.
"You shall have all you want of both," he growled, "and if you cannot answer my questions you shall never go hence alive."
He did not even ask Odin to sit down, but let him stand in the hall, despising him too much to show him any courtesy. After a time he began to ask questions.
"Tell me, if you can, O wise Gangraad, the name of the river which divides Asgard from Jötunheim."
"The river Ifing, which never freezes over," answered Odin quickly, as if it were the easiest question in the world; and indeed it was to him, although no man could have answered it. Vafthrudner looked up in great surprise when he heard the reply.