Stone is the very antecedent of life itself. It is cold, unmoving, and unfeeling. Discord is stone now, trapped by the Elements of Harmony wielded by six ponies that represented them. Stone, when undisturbed, is worn down by the sands of time, forever flowing over its hard, cold surface. The sands of time pour forever.
Reading done by Rylius: http://youtu.be/w_3dSJ-N6G0