Odin (from Hávamál)
“The cowardly man thinks he’ll live for ever,
if he keeps away from fighting;
but old age won’t grant him a truce
even if spears spare him.”
- This quote comes from stanza 16 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).