Everything whatever that is born in the world and its triple kingdom could never be born without a passive and an acting element. Countless things confirm this, and there is no effect in the universe that would not confirm it if mankind would set about finding confirmations. In the human body there is not the least little particle that produces anything which does not have an acting and a passive element whereby it produces an effect and procreates. Neither is there the least idea of thought that does not. This is entirely true.