Good and Evil
There's only two kind of people in this world, good and evil. I don't say good and bad on purpose because sometimes people do the right things for the wrong reasons and the wrong things for the right reasons. Therefore someone's internal moral integrity cannot be judged accurately. With evil people, their actions come straight from the heart.
Evil people have no moral integrity, no shame, no pride, and no respect. They prey on the weak. They take every opportunity to implement chaos in peoples lives just to amuse themselves. The mere sight of other people having pleasure in their lives brings jealousy to their eyes.
Evil people stay up at night contemplating another human beings demise. There's no purpose in their actions but to be evil. The definition of evil is profound immorality, wickedness, and depravity, especially when regarded as a supernatural force.
Here are my words of wisdom: Stay away from evil people. How do you tell they are evil? Go with your gut. The good in you will be repulsed by them. If the good in you isn't repulsed by the evil person maybe you're the evil one.