noun
immortality of the soul
Rare philosophical or religious term referring to the doctrine that the soul does not die.
プラトンの著作には魂不死説が繰り返し現れる。
The theory of the immortality of the soul appears repeatedly in Plato's works.
Compound of 魂 (tamashii, 'soul') + 不死 (fushi, 'immortality') + 説 (setsu, 'theory').