Yule is deeply rooted in the cycle of the year, it is the seed time of year, the longest night and the shortest day, where the Goddess once again becomes the Great Mother and gives birth to the new Sun King. In a poetic sense it is on this the longest night of the winter, 'the dark night of our souls', that there springs the new spark of hope, the Sacred Fire, the Light of the World, the Coel Coeth.
STATEMENT BORROWED FROM: http://www.thewhitegoddess.co.uk/the_wheel_of_the_year/yule_-_winter_solstice.asp