science says the soul has weight, which is lost when one dies
science says energy cannot be created or destroyed; only moved
if the soul is energy
that escapes on death
where does it go and what happens to it?
if the soul is matter
then it is matter we cannot perceive,
standing to reason there must be other matter we cannot perceive.
Human conceit is thinking we are all that exists with any level of intellect
but the greater hubris is assuming we'd be able to make sense of those other things that exist beyond us in the first place, enough to give them name and apply our logic to their concepts
Other stuff out there. That's cosmically nearly guaranteed. But it hopefully don't give a shyt about us, and I will return the favor as a show of respect.