Karma is the law of moral causation. The theory of Karma is a fundamental doctrine in Buddhism. This belief was prevalent in India before the advent of the Buddha. Nevertheless, it was the Buddha who explained and formulated this doctrine in the complete form in which we have it today.
What is the cause of the inequality that exists among mankind?
Why should one person be brought up in the lap of luxury, endowed with fine mental, moral and physical qualities, and another in absolute poverty, steeped in misery?
Why should one person be a mental prodigy, and another an idiot?
Why should one person be born with saintly characteristics and another with criminal tendencies?
Why should some be linguistic, artistic, mathematically inclined, or musical from the very cradle?
Why should others be congenitally blind, deaf, or deformed?|
Why should some be blessed, and others cursed from their births?
Either this inequality of mankind has a cause, or it is purely accidental. No sensible person would think of attributing this unevenness, this inequality, and this diversity to blind chance or pure accident.
In this world nothing happens to a person that he does not for some reason or other deserve. Usually, men of ordinary intellect cannot comprehend the actual reason or reasons. The definite invisible cause or causes of the visible effect is not necessarily confined to the present life, they may be traced to a proximate or remote past birth.
According to Buddhism, this inequality is due not only to heredity, environment, “nature and nurture”, but also to Karma. In other words, it is the result of our own past actions and our own present doings. We ourselves are responsible for our own happiness and misery. We create our own Heaven. We create our own Hell. We are the architects of our own fate.