The rational soul of man has supernatural, infinite aspirations. If the rational soul were dependent upon the body and died together with the body, it should necessarily submit to the body and follow it in all its appetites. Independence would have been contrary both to the laws of nature and to reason, because it disturbs the harmony between the body and the soul. As dependent upon the body it should submit to the body and follow in all its appetites and desires, whereas, on the contrary, the soul masters the body, imposes its will upon the body. The soul subjugates and curbs the appetites and passions of the body, and directs them as it (the soul) wills. This phenomenon comes to the attention of every rational man; and whoever is conscious of his own rational soul is conscious of the soul's mastery over the body.
The mastery of the soul over the body is proved by the obedience of the body when it is being led with self-denial to sacrifice for the sake of the abstract ideas of the soul. The domination by the soul for prevalence of its principles, ideas, and views would have been entirely incomprehensible if the soul died together with the body. But a mortal soul would never have risen to such a height, would never have condemned itself to death along with the body for the prevalence of abstract ideas that lacked meaning, since no noble idea, no noble and courageous thought has any meaning for a mortal soul.
A soul, therefore, which is capable of such things, must be immortal.
Saint Nektarios of Aegina
