"There's a natural law of karma that vindictive people, who go out of their way to hurt others, will end up broke and alone"
(Sylvester Stallone).
I often get the question, "Do you believe in Karma?" And my answer remains, "Although I am a zen yogi who admires the spirituality of Hinduism and Buddhism, I can't look at you in the eye and tell you that I believe a higher power will punish you for your wrongdoings; however, I do believe nice actions result in nice actions and vice versa."
If you do well for the world, it will come back to you.
"How people treat you is their karma; how you react is yours"
(Wayne Dyer).
The Theory of Karma or better yet, The Law of Moral Causation attempts to answer questions about inequality found in mankind. In the phrase "Moral Causation," it is said that a moral (or immoral) past action impacts the present endeavor. Like the Domino Effect, one behavior influences another and another: One smile generates another smile and the cycle continues. Similarly, a pessimistic opposing deed creates more negativity. Hence, the positive and negative conflict and our society, thus, remains unequal.
"I believe in karma, and I believe if you put out positive vibes to everybody, that's all you're going to get back"
(Kesha).
At least this is what Buddha claims: "All living beings have actions (Karma) as their own, their inheritance, their congenital cause, their kinsman, their refuge. It is Karma that differentiates beings into low and high states."
And this makes sense. We are all separated by our actions and the influences that come back to us; generally, when someone is rude to you, you respond rudely, vice versa.
The good and evil are consequently divided.
But, I don't believe in such black and white lines. Everyone wants to be good and has light within them; however, it is the need to be defensive that hides the kindness in some. This same negativity is what brings about more negativity.
In the end, the old saying is valid: What comes around, goes around, and you don't have to be spiritual to understand the concept.