Higher than the question of our duration is the question of our deserving. Immortality will come to such as are fit for it, and he would be a great soul in future must be a great soul now.
This world is indeed a living being endowed with a soul and intelligence ... a single visible living entity containing all other living entities, which by their nature are all related.
I consist of body and soul - in the worlds of a child. And why shouldn't we speak like children? But the enlightened, the knowledgealbe would say: I am body through and through, nothing more; and the soul is just a word for something on the body.
Anything which is a hindrance to the fight of the soul is a delusion and a snare, even like the body which often does hinder you in the path of salvation.
Jiva (individual soul) is the conscious ruler of this body, in whom the five life principles come into unity, and yet that very Jiva is the Atman, because all is Atman.