then said turgon : `` every year at the lifting of winter have messengers repaired swiftly and by stealth down the river that is called sirion to the coasts of the great sea , and there builded them boats whereto have swans and gulls been harnessed or the strong wings of the wind , and these have sought back beyond the moon and sun to valinor ; but the paths thereto are forgotten and the highways faded from the world , and the seas and mountains are about it , and they that sit within in mirth reck little of the dread of melko or the sorrow of the world , but hide their land and weave about it inaccessible magic , that no tidings of evil come ever to their ears .