Descartes

thought that he was
because he thought.
He did not think that fantasy
could create fantasy, except
for the fantasy of God
or human intelligence.
He also thought that animals
could not feel pain.
Thus they were unlikely to have thoughts,
and so perhaps did not exist beyond his thoughts.
Such nonsense is typical of philosophers.
His charming, eager followers nailed dogs to doors
to show that animals were senseless
in their castrated sense of the word
without sense of the absurd.

Let us consider entropy which involves no loss of energy.
Perhaps it gains it, since we are told
by equally-constricted (if apparently bold)
modern thinkers that Black Holes
could be full of it.
Death is thus energetic entropy.
Entropic energy might be the "souls"
so dear to Descartes' mind
and others' of his heartless Deist kind.