Thesis: there is place of the soul in separation, an afterlife.
1.) Nature makes material things by cycles. Rain, rocks, seasons, animal-tree respiration, trees-fruit.
2a.) Living things are material things that nature makes.
2b.) There must be a bio-cycle.
3a.) But life is the union of body and soul and death their separation.
3b.) So the union and separation of soul and body must form a cycle: separation from union and union from separation.
4.) There must be some place of the soul in separation.