 Jacob Grimm states that , though the norns and valkyries are similar in nature , there is a fundamental difference between the two . Grimm states that a dís can be both norn and a valkyrie , " but their functions are separate and usually the persons . The norns have to pronounce the <unk> [ fate ] , they sit on their chairs , or they roam through the country among mortals , fastening their threads . Nowhere is it said that they ride . The <unk> ride to war , decide the issues of fighting , and conduct the fallen to heaven ; their riding is like that of heroes and gods [ ... ] . " 
