yes, i see you take the teaching of the greek philosophers as truth. However, for someone who believes that the bible is the word of God, we must look at the bible as our source of truth because it comes from God. By looking at the ways the original words are employed in the scriptures, we can see that the Nephesh/Physke/soul is actually the living person (or animal) themselves.
The New Catholic Encyclopedia says: “Nepes [ne′phesh] is a term of far greater extension than our ‘soul,’ signifying life (Ex 21.23; Dt 19.21) and its various vital manifestations: breathing (Gn 35.18; Jb 41.13[21]), blood [Gn 9.4; Dt 12.23; Ps 140(141).8], desire (2 Sm 3.21; Prv 23.2). The soul in the O[ld] T[estament] means not a part of man, but the whole man—man as a living being. Similarly, in the N[ew] T[estament] it signifies human life: the life of an individual, conscious subject (Mt 2.20; 6.25; Lk 12.22-23; 14.26; Jn 10.11, 15, 17; 13.37).”—1967, Vol. XIII, p. 467.
Philosophers such as Socrates & Plato had some interesting ideas...but thats all they are because they did not come from God, they are mans ideas only...man being infallible and prone to error and man having very little control or knowledge of the world, how it was created, where life came from or where its going. The only one who really knows about life and death is God himself because he was the one who created life and permitted death.