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Q. But is not eternal life the highest and the best, the greatest good?
A. That is to confuse the unconditional with the eternal. [...] Lacking the respiration of time's passing we would expire before our time, simply giving up the ghost and without quite dying live on as un-dead. It is mortality that gives life vitality; immortality is lethal. The fruit of the tree of life is poisonous. Immortality is the really forbidden fruit. That life takes a fleeting and evanescent form does not demolish its meaning; it defines it.
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John D. Caputo (Hoping Against Hope: Confessions of a Postmodern Pilgrim)