kaTha Upanishad
अतिमुच्य धीराः प्रेत्यास्माल्लोकादमृता भवन्ति ॥ — 1.2, kena Upanishad.
[Meaning: The wise, having relinquished all false identifications, become immortal upon departing from this world.]
The kena Upanishad tells us that “A dead man becomes immortal after death.”
At first glance, what the kena says appears to be a paradox: it suggests that one must “depart” to become immortal. If we take this literally, it sounds as though a dead man becomes immortal — yet a dead man is no longer there to experience immortality. This apparent contradiction is the gateway to a deeper Vedantic truth.
kena Upanishad is actually pointing to a “solution” for the one thing we all struggle with: Freedom from the constant, grinding cycle of birth, death, and the misery in between — what the shAstra-s (texts) call samsAra.