Immortality (n.) is not survival after death but living consciously in the universal while still alive.
Immortality (n.) of the soul was based, by Kant and Fichte, on the postulate of a perpetual approximation to the law of reason that is never reached.
Immortality (n.) of the soul is, for Hegel, picture-language for a deeper truth: death is not an outside negation of the subject but something spirit posits in order to be.
Immortality (n.) was sought by the old metaphysics in just the sphere where compositeness, time and alteration have their place — by treating the soul as a simple thing.
Immortality (n.) in Homer is lent by the muse and lives in our memories; in Dante the damned are eternal in themselves, not in our ideas, and the poet's memorial counts as the judgement of God.