Immortality theories:

Nietzsche, immortality, singularity and eternal recurrence, it is argued, may be understood as Nietzsche’s distinctive contribution to a specifically modern notion of immortality: the ability of an individual to live in such a way that his or her singular ‘place’ in society is ensured, necessarily there, even after his or her death.

Cosmic Consciousness

this consciousness shows the cosmos to consist not of dead matter governed by unconscious, rigid, and unintending law; it shows it on the contrary as entirely immaterial, entirely spiritual and entirely alive; it shows that death is an absurdity, that everyone and everything has eternal life; it shows that the universe is God and that God is the universe, and that no evil ever did or ever will enter into it; a great deal of this is, of course, from the point of view of self consciousness, absurd; it is nevertheless undoubtedly true.[3]

‘eternity’: what it is, where it lies. It is not ‘all time’, it is ‘out of time’. He draws the following diagram: