Not long after this, the Æsir quarrelled with the Vanir, wild enemies of theirs, and there was a terrible battle. But in the end the two sides made peace; and to prove that they meant never to quarrel again, they exchanged hostages. The Vanir gave to the Æsir old Niörd the rich, the lord of the sea and the ocean wind, with his two children, Frey and Freia. This was indeed a gracious gift; for Freia was the most beautiful maid in the world, and her twin brother was almost as fair. To the Vanir in return Father Odin gave his own brother Hœnir. And with Hœnir he sent Mimer the wise, whom he took from his lonely well.
Now the Vanir made Hœnir their chief, thinking that he must be very wise because he was the brother of great Odin, who had lately become famous for his wisdom. They did not know the secret of Mimer's well, how the hoary old giant was far more wise than anyone who had not quaffed of the magic water. It is true that in the assemblies of the Vanir Hœnir gave excellent counsel. But this was because Mimer whispered in Hœnir's ear all the wisdom that he uttered. Witless Hœnir was quite helpless without his aid, and did not know what to do or say. Whenever Mimer was absent he would look nervous and frightened, and if folk questioned him he always answered:
"Yes, ah yes! Now go and consult someone else."
Of course the Vanir soon grew very angry at such silly answers from their chief, and presently they began to suspect the truth. "Odin has deceived us," they said. "He has sent us his foolish brother with a witch to tell him what to say. Ha! We will show him that we understand the trick." So they cut off poor old Mimer's head and sent it to Odin as a present.
The tales do not say what Odin thought of the gift. Perhaps he was glad that now there was no one in the whole world who could be called so wise as himself. Perhaps he was sorry for the danger into which he had thrust a poor old giant who had never done him any wrong, except to be a giant of the race which the Æsir hated. Perhaps he was a little ashamed of the trick which he had played the Vanir. Odin's new wisdom showed him how to prepare Mimer's head with herbs and charms, so that it stood up by itself quite naturally and seemed not dead. Thenceforth Odin kept it near him, and learned from it many useful secrets which it had not forgotten.
So in the end Odin fared better than the unhappy Mimer, whose worst fault was that he knew more than most folk. That is a dangerous fault, as others have found; though it is not one for which many of us need fear being punished.
CHAPTER XIII
THE QUEST OF THE HAMMER
One morning Thor the Thunderer awoke with a yawn, and stretching out his knotted arm, felt for his precious hammer, which he kept always under his pillow of clouds. But he started up with a roar of rage, so that all the palace trembled. The hammer was gone!
Now this was a very serious matter, for Thor was the protector of Asgard, and Miölnir, the magic hammer which the dwarf had made, was his mighty weapon, of which the enemies of the Æsir stood so much in dread that they dared not venture near. But if they should learn that Miölnir was gone, who could tell what danger might not threaten the palaces of heaven?