I've met several people who I truly believe lack any semblance of a soul, they have no compassion, no understanding of love, they thrive on others pain and misery and often help cause it.
Human shaped monsters if you will.
How do you feel about this? Have you met anyone that fits the description?
They closest I've been able to come to naming this group of people is to bunch them in with Psychic Vampires. However, I do know that many Psychic vampires are not malevolent or evil.
I put this in the relationship section because I wonder if you've ever had contact with these people and how it went.
John Steinbeck said it best:
"I believe there are monsters born in the world to human parents... The face and body may be perfect, but if a twisted gene or a malformed egg can produce physical monsters, may not the same process produce a malformed soul?"