Insanity and earthbound spirits

Spiritual knowledge leads us not to believe but to understand real life, not the imaginary life after this.
So why should we not learn about ourselves?

We must know where we are going after passing out of the physical.
Many do not realize they are dead without this knowledge, and they remain in their earthly home.
Because of the ignorance of spiritual knowledge, discarnate beings can become earthbound spirits who bring us the opportunity of obsession and insanity.
For the thought influence of many discarnate beings who have not yet reached a full realization of real life’s purpose surround us on earth.

We should live a life of understanding, not a life of believing, to prepare for real-life after this.

Insanity is not a stigma; the public attitude toward this affliction should be one, not of aversion but of understanding, and a realization of the close inter-relationship of the visible and invisible worlds.

Thirty Years Among The Dead by C.A. Wickland, M.D.