At the end of the First Age the Valar gave to the Half-elven an irrevocable choice to which
kindred they would belong. Elrond chose to be of Elven-kind, and became a master of
wisdom. To him therefore was granted the same grace as to those of the High Elves that still
lingered in Middle-earth: that when weary at last of the mortal lands they could take ship
from the Grey Havens and pass into the Uttermost West; and this grace continued after the
change of the world. But to the children of Elrond a choice was also appointed: to pass with
him from the circles of the world; or if they remained to become mortal and die in Middleearth."
From the Appendixes