Enéada II

Every living thing is a combination of SOUL and body-kind: the celestial sphere, therefore, if it is to be everlasting as an individual entity must be so in virtue either of both these constituents or of one of them, by the combination of SOUL and body or by SOUL only or by body only. Enneads II,1,2
Of course anyone that holds body to be incorruptible secures the desired permanence at once; no need, then, to call on a SOUL or on any perdurable conjunction to account for the continued (…)