There are no spiritual beings in the world, but they don't exist in the human world. They may live in another dimension of space. The human world appears because of people's thoughts. Some things that don't exist are condensed into objects due to more and more thoughts.
To put it bluntly, the human heart is scarier than ghosts. Ghosts exist for a purpose, while human hearts are unpredictable.
Intention: woo woo woo