all his court were cast down in slumber , and all the fires faded and were quenched ; but the silmarils in the crown on morgoth 's head blazed forth suddenly with a radiance of white flame ; and the burden of that crown and of the jewels bowed down his head , as though the world were set upon it , laden with a weight of care , of fear , and of desire , that even the will of morgoth could not support .