Fiolth ec for,
fiolth ec freistathac,
fiolth ec um reynda regin:
hvat lifir manna,
tha er inn mæra lithr
fimbulvetr meth firom?
"Much I have travelled, much I have tried, much I have tested the powers. What human persons shall still live when the famous fimbul-winter has been in the world?"
Vafthrudner answers:
Lif oc Leifthrasir,
enn thau leynaz muno
i holti Hoddmimis;
morgindauggvar
thau ser at mat hafa
enn thadan af aldir alaz.
"Lif and Leifthraser (are still living); they are concealed in Hodd-Mimer's grove. They have morning dews for nourishment. Thence (from Hodd-Mimer's grove and this human pair) are born (new) races."
Gylfaginning says that the two human beings, Lif and Leifthraser, who become the progenitors of the races that are to people the earth after Ragnarok, are concealed during the conflagration of the world in Hodd-Mimer's grove. This is, beyond doubt, in accordance with mythic views. But mythologists, who have not paid sufficient attention to what Gylfaginning's source (Vafthrudnersmal) has to say on the subject, have from the above expression drawn a conclusion which implies a complete misunderstanding of the traditions in regard to Hodd-Mimer's grove and the human pair therein concealed. They have assumed that Lif and Leifthraser are, like all other people living at that time, inhabitants of the surface of the earth at the time when the conflagration of the world begins. They have explained Mimer's grove to mean the world-tree, and argued that when Surt's flames destroy all other mortals this one human pair have succeeded in climbing upon some particular branch of the world-tree, where they were protected from the destructive element. There they were supposed to live on morning dews until the end of Ragnarok, and until they could come down from their hiding-place in Ygdrasil upon the earth which has risen from the sea, and there become the progenitors of a more happy human race.
According to this interpretation, Ygdrasil was a tree whose trunk and branches could be grasped by human hands, and one or more mornings, with attendant morning dews, are assumed to have come and gone, while fire and flames enveloped all creation, and after the sun had been swallowed by the wolf and the stars had fallen from the heavens (Gylfag., 55; Völusp., 54)! And with this terrible catastrophe before their eyes, Lif and Leifthraser are supposed to sit in perfect unconcern, eating the morning dews!
For the scientific reputation of mythical inquiry it were well if that sort of investigations were avoided when they are not made necessary by the sources themselves.
If sufficient attention had been paid to the above-cited evidence furnished by Vafthrudnersmal in this question, the misunderstanding might have been avoided, and the statement of Gylfaginning would not have been interpreted to mean that Lif and Leifthraser inhabited Mimer's grove only during Ragnarok. For Vafthrudnersmal plainly states that this human pair are in perfect security in Mimer's grove, while a long and terrible winter, a fimbul-winter, visits the earth and destroys its inhabitants. Not until after the end of this winter do giants and gods collect their forces for a decisive conflict on Vigrid's plains; and when this conflict is ended, then comes the conflagration of the world, and after it the regeneration. Anent the length of the fimbul-winter, Gylfaginning (ch. 55) claims that it continued for three years "without any intervening summer."
Consequently Lif and Leifthraser must have had their secure place of refuge in Mimer's grove during the fimbul-winter, which precedes Ragnarok. And, accordingly, the idea that they were there only during Ragnarok, and all the strange conjectures based thereon, are unfounded. They continue to remain there while the winter rages, and during all the episodes which characterise the progress of the world towards ruin, and, finally, also, as Gylfaginning reports, during the conflagration and regeneration of the world.