Sundial Mottoes lean to the somber, a caution to be mindful of time for example: Sumus -Fumus ' 'We Vanish Like Smoke' or Sic-Imus-Ad-Atria-Lucis-Aut-Umbras-Erebi 'Thus We Pass on to the Halls of Light or to the Dwelling of the Shades.' (image Chartres Cathedral)