To be whole again there needs to be integration, a joining of halves, a blending of lost parts of yourself.

There's a great mystery in the process, we know the scientific explanation but even knowing how it happens doesn't preclude the mystery. This is probably why we resonate with this cycle on a spiritual level; there’s a common sense of ‘not knowing’ what happens to us between our death and our birth as well, and here it is happening right in front of us but we still can't quite 'see' it.