Related to this, when I was a kid, the literature of Jorge Luis Borges introduced me to the pleasure of the norse mythology, all tinted with a code of Courage, Truth, Honour and Discipline.
More serpents lie under the ash of Yggdrasill
than any fool can imagine:
Goin and Moin, they are Grafvitnir's sons,
Grabak and Grafvollud,
Ofnir and Svafnir I think forever will
bite on the tree's branches.
From the Grímnismál (Sayings of Grímnir), Konungsbók (Codex Regius).