"The sun and moon and the five 'planets', as they are called, have come into being to define and preserve the measures of time."
- Plato, Timaeus (Timaeus and Critias)
"The father of Moon and likewise the Sun, they must pass through the sky every day to count the years for men."
- Vafthrudnir (Vafthrudnismal), Poetic Edda
