Many think viruses are bad or evil, spreading as they do from one person to the next, from one country to the next, to invade and infect scores of humans and animals. But, thoughts too are contagious.

We have a natural immunity against all thoughts that do not fit in with our own purposes and beliefs, equally as we are inoculated with a wholesome trust and belief in our own thoughts about those of others.

Ideas such as 'psychic invasion' or 'psychic vampires' or 'psychic killing' are mental fears recognized as concepts.

We cannot divide mental health from physical health, nor can we divide a person's philosophy from their bodily condition.