J. A. MacCulloch, The Religion of the Ancient Celts
“ In most of the tales Elysium is a land without grief or death, where there is immortal youth and peace, and every kind of delight. But in some, while the sensuous delights are still the same, the inhabitants are at war, invite the aid of mortals to overcome their foes, and are even slain in fight. Still in both groups Elysium is a land of gods and supernatural folk whither mortals are invited by favour. It is never the world of the dead; its people are not mortals who have died and gone thither. ”
