“Wits are needful for someone who wanders widely,
anything will pass at home;
he becomes a laughing-stock, the man who knows nothing
and sits among the wise.”
- This quote comes from stanza 5 of Hávamál (Sayings of the High One), an old poem which was preserved in the 13th-century Poetic Edda which was produced anonymously in Iceland. The translation is by Carolyne Larrington (Oxford University Press, 2014).