So Urdr, Verdandi and Skuld would decide our fate. They are not kindly women, indeed they are monstrous and malevolent hags, and Skuld's shears are sharp. When those blades cut, they cause tears that feed the well of Urdr that lies beside the world tree, and the well gives the water that keeps Yggdrasil alive, and if Yggdrasil dies, then the world dies, and so the well must be kept filled, and for that there must be tears. We cry so that the world can live.